Embroidery machine head

Abstract

The utility model discloses an embroidery machine head which comprises a needle rod assembly, a presser foot assembly, a guide rod and a driving mechanism, the length of the needle rod is greatly reduced by arranging the guide rod, so that the needle rod has better stability during working; besides, the top of the needle rod is driven by the pressure head to replace a traditional driving mode that the middle of the needle rod is clamped by a sleeve, and meanwhile, a larger occlusion area is formed between the clamping piece and the clamping groove, so that the needle rod can be better stressed, thicker and harder fabric can be embroidered, the needle rod is effectively prevented from being deformed in the movement process, and the needle rod cannot be damaged. And the needle breaking rate and the defective rate are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of embroidery machine equipment, and more specifically, to an embroidery machine head. BACKGROUND

[0002] The head of an embroidery machine is the key part that performs the embroidery work. It contains core components such as needles, rotating shuttles, stitch forming mechanisms, etc., and is responsible for embroidering stitches on the fabric according to the pre-set pattern. Depending on different needs, an embroidery machine may be equipped with one or more heads to achieve embroidery patterns of different colors and complexities.

[0003] However, the needle bar of the existing embroidery machine head is usually designed to be very long. The long needle bar will result in poor stability during high-speed movement, which will easily affect the quality of embroidery. In addition, in order to reduce the weight of the needle bar, the long needle bar is usually designed as a hollow structure, which is prone to deformation during driving. In addition, the driving mechanism of the long needle bar is usually arranged in the middle of the needle bar, and the engagement surface between the driving mechanism and the needle bar assembly is small when they are lifted, which is not good for force. This will make it difficult for such a needle bar to embroider on thick or hard fabrics (such as shoes, hats, belts, etc.), resulting in a high needle breakage rate and a high rate of defective products. CONTENT OF THE INVENTION

[0004] The advantage of the present application is to provide an embroidery machine head, which greatly reduces the length of the needle bar by setting a guide rod, so that it has better stability when working. In addition, the driving of the needle bar top by the pressure head replaces the traditional driving mode of clamping the middle part of the needle bar by the sleeve, and the engagement area between the clamping piece and the clamping groove is larger, so that the needle bar can be better stressed, and thicker and harder fabrics can be embroidered, effectively avoiding the deformation of the needle bar during movement, reducing the needle breakage rate and the defective product rate.

[0005] Other advantages and features of the present application will become apparent from the following description, and can be realized by the means and combinations specifically indicated in the specification.

[0006] To achieve the above at least one advantage, the application provides an embroidery machine head, comprising: a needle bar assembly, the needle bar assembly comprising a pressure head and a needle bar, the pressure head being clamped on the top of the needle bar; a presser foot assembly, the presser foot assembly comprising a guide sleeve and a presser foot member connected together, the presser foot member being sleeved on the needle bar, and the guide sleeve being sleeved on the needle bar and located between the pressure head and the presser foot member; a guide rod, the guide rod penetrating through the pressure head and the guide sleeve to be arranged in parallel with the needle bar, a presser foot spring being sleeved on the guide rod between the pressure head and the guide sleeve, and a return spring being sleeved on the guide rod below the guide sleeve; and a driving mechanism, the driving mechanism comprising a guide shaft, a power transmission device, and first and second sliding members slidingly arranged on the guide shaft, the guide shaft being arranged in parallel with the needle bar, the power transmission device being drivably connected with the first and second sliding members, the first sliding member being capable of being connected with the pressure head and being synchronously lifted and lowered, and the second sliding member being held below the guide sleeve.

[0007] In an embroidery machine head according to the application, the first sliding member comprises a first sliding sleeve and a clamping member, the clamping member being hingedly connected with the first sliding sleeve, and a torsion spring being arranged between the clamping member and the first sliding sleeve, and the second sliding member comprises a second sliding sleeve and a supporting block, the supporting block being protrusively arranged on the second sliding sleeve.

[0008] In an embroidery machine head according to the application, the power transmission device comprises first and second transmission devices, the first transmission device being drivably connected with the first and second sliding sleeves, and the second transmission device being connectable with the clamping member to control the rotation of the clamping member on the first sliding sleeve.

[0009] In an embroidery machine head according to the application, the second transmission device comprises a second driving motor and a swing arm, one end of the swing arm being rotationally connected with the second driving motor, and the other end of the swing arm being provided with a swing head.

[0010] In an embroidery machine head according to the application, the clamping member is provided with a clamping block and a blocking block, the pressure head is provided with a clamping groove, the clamping block is clamped in the clamping groove, and the blocking block is arranged in front of the swing head, when the swing arm is driven to swing, the swing head abuts against the blocking block and pushes the clamping member to rotate, so as to realize the engagement and disengagement between the clamping member and the pressure head.

[0011] In an embroidery machine head according to the application, the guide sleeve is protrusively provided with a protruding block, and the supporting block is capable of being held below the protruding block to drive the guide sleeve to rise.

[0012] In the embroidery machine head according to the present application, a head shell is further included, and the needle bar assembly, the presser foot assembly, the guide rod and the driving mechanism are all arranged in the head shell.

[0013] In the embroidery machine head according to the present application, the first transmission device comprises a cam assembly, a three-eye connecting rod, a first connecting rod, a second connecting rod and a third connecting rod which are sequentially connected in transmission, the first connecting rod is drivably connected with the first sliding piece, and the third connecting rod is drivably connected with the second sliding piece.

[0014] In the embroidery machine head according to the present application, a first sliding block is protrusively arranged on the connecting end of the second connecting rod and the third connecting rod, and a second sliding block is protrusively arranged on the connecting end of the third connecting rod and the second sliding piece.

[0015] In the embroidery machine head according to the present application, the first transmission device further comprises a limiting guide plate fixedly arranged on the head shell, the limiting guide plate is provided with a first guide groove and a second guide groove, the first guide groove is an arc-shaped groove, the second guide groove is a vertical groove, the first sliding block is slidably arranged in the first guide groove, and the second sliding block is slidably arranged in the second guide groove.

[0016] The further purposes and advantages of the present application will be fully understood through the following description and drawings.

[0017] The purposes, features and advantages of the present application will be fully understood through the following detailed description and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other purposes, features and advantages of the present application will become more apparent through the following detailed description and drawings. The drawings are provided to provide further understanding of the embodiments of the present application and constitute a part of the specification, which serve to explain the present application together with the embodiments of the present application, but do not constitute a limitation of the present application. In the drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 FIG. 1 illustrates a schematic diagram of the overall structure of an embroidery machine head according to an embodiment of the present application.

[0020] Figure 2 FIG. 2 illustrates a schematic diagram of the structure of a needle bar assembly, a presser foot assembly, a guide rod and part of a driving mechanism according to an embodiment of the present application.

[0021] Figure 3 FIG. 3 illustrates a schematic diagram of part of a first transmission mechanism and a limiting guide plate according to an embodiment of the present application.

[0022] Figure 4The figure shows a schematic structural diagram of a needle bar assembly and a presser foot assembly according to an embodiment of the present application.

[0023] Figure 5 The figure shows a schematic structural diagram of the second transmission device and the first sliding member according to an embodiment of the present application.

[0024] In the picture:

[0025] Needle bar assembly 1; pressure head 11; slot 111; needle bar 12;

[0026] Presser foot assembly 2; guide sleeve 21; protrusion 211; presser foot member 22;

[0027] Guide rod 3; pressure foot spring 31; return spring 32;

[0028] Driving mechanism 4; guide shaft 41; power transmission device 42; first transmission device 421; cam assembly 4211; three-eye connecting rod 4212; first connecting rod 4213; second connecting rod 4214; third connecting rod 4215; limiting guide plate 4216; first guide groove 42161; second guide groove 42162; first slider 4217; second slider 4218; second transmission device 422; second driving motor 4221; swing arm 4222; swing head 4220; first sliding member 43; first sliding sleeve 431; clamping member 432; clamping block 4321; stopper 4322; torsion spring 433; second sliding member 44; second sliding sleeve 441; supporting block 442;

[0029] Head housing 5. DETAILED DESCRIPTION

[0030] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described herein.

[0031] like Figures 1-4 The figure illustrates the structure of an embroidery machine head according to an embodiment of the present application. The embroidery machine head comprises a needle bar assembly 1, a presser foot assembly 2, a guide rod 3, and a drive mechanism 4. The needle bar assembly 1 comprises a pressure head 11 and a needle bar 12. The pressure head 11 is clamped on the top of the needle bar 12. The pressure head 11 is driven up and down to synchronously drive the needle bar 12 to move up and down.

[0032] The presser foot assembly 2 includes a connected guide sleeve 21 and a presser foot piece 22 . The presser foot piece 22 is sleeved on the needle rod 12 . The guide sleeve 21 is sleeved on the needle rod 12 and is located between the press head 11 and the presser foot piece 22 .

[0033] The guide rod 3 penetrates the presser foot 11 and the guide sleeve 21 and is arranged in parallel with the needle bar 12. A presser foot spring 31 is arranged on the guide rod 3 between the presser foot 11 and the guide sleeve 21. A reset spring 32 is arranged on the guide rod 3 below the guide sleeve 21.

[0034] The driving mechanism 4 comprises a guide shaft 41, a power transmission device 42, a first sliding member 43 and a second sliding member 44 slidingly arranged on the guide shaft 41. The guide shaft 41 is arranged in parallel with the needle bar 12. The power transmission device 42 is drivingly connected with the first sliding member 43 and the second sliding member 44. The first sliding member 43 is connected with the presser foot 11 and synchronously lifts and lowers. The second sliding member 44 is dragged below the guide sleeve 21. That is, the first sliding member 43 and the second sliding member 44 are controlled to lift and lower by the driving mechanism 4, so as to control the needle bar assembly 1 and the presser foot assembly 2 to lift and lower to complete the embroidery operation.

[0035] In particular, the embroidery machine head further comprises a head shell 5. The needle bar assembly 1, the presser foot assembly 2, the guide rod 3 and the driving mechanism 4 are arranged in the head shell 5.

[0036] Specifically, the first sliding member 43 comprises a first sliding sleeve 431 and a clamping piece 432. The clamping piece 432 is hingedly connected with the first sliding sleeve 431. A torsion spring 433 is arranged between the clamping piece 432 and the first sliding sleeve 431. The second sliding member 44 comprises a second sliding sleeve 441 and a supporting block 442. The supporting block 442 is protrusively arranged on the second sliding sleeve 441.

[0037] More specifically, the power transmission device 42 comprises a first transmission device 421 and a second transmission device 422. The first transmission device 421 is drivingly connected with the first sliding sleeve 431 and the second sliding sleeve 441. The second transmission device 422 is connected with the clamping piece 432 to control the clamping piece 432 to rotate on the first sliding sleeve 431.

[0038] In particular, as shown in Figure 5As shown, the second transmission device 422 comprises a second driving motor 4221 and a swing arm 4222, one end of the swing arm 4222 is rotatably connected with the second driving motor 4221, and the other end is provided with a swing head 4220. The clamping piece 432 is provided with a clamping block 4321 and a stop block 4322, the pressing head 11 is provided with a clamping groove 111, the clamping block 4321 can be clamped in the clamping groove 111, and the stop block 4322 is arranged in front of the swing head 4220. When the swing arm 4222 is driven to swing, the swing head 4220 abuts against the stop block 4322 and pushes the clamping piece 432 to rotate. When the swing head 4220 is separated from the stop block 4322, the clamping piece 432 is reset under the action of the torsional spring 433, so as to realize the connection and disconnection between the clamping piece 432 and the pressing head 11. In other words, when the clamping block 4321 is clamped in the clamping groove 111, the clamping piece 432 is clamped with the pressing head 11, and at this time, the first sliding piece 43 can drive the needle bar assembly 1 to synchronously ascend and descend. At the same time, the clamping piece 432 and the clamping groove 111 are clamped, and have a larger clamping surface, so that the pressing head 11 is better stressed when being driven to move, and the stability of the lifting is improved, so that the pressing head 11 can be better stressed.

[0039] Preferably, the guide sleeve 21 is provided with a protruding block 211, and the supporting block 442 can be supported below the protruding block 211, so as to drive the guide sleeve 21 to synchronously ascend, and at this time, the presser spring 31 is compressed. When the supporting block 442 descends, the presser assembly 2 descends under the elastic force of the presser spring 31. When the pressing head 11 descends, the presser spring 31 is compressed to drive the presser assembly 2 to move downward, until the supporting block 442 abuts against the protruding block 211. When the pressing head 11 ascends, the presser assembly 2 gradually ascends and resets under the action of the reset spring 32.

[0040] As shown in the figure, Figure 2 The first transmission device 421 comprises a cam assembly 4211, a three-eye connecting rod 4212, a first connecting rod 4213, a second connecting rod 4214 and a third connecting rod 4215 which are sequentially and drivingly connected, the first connecting rod 4213 is drivingly connected with the first sliding piece 43, and the third connecting rod 4215 is drivingly connected with the second sliding piece 44.

[0041] Specifically, as shown in the figure, Figure 3As shown, the first sliding block 4217 is protruded on the connecting end of the second connecting rod and the second sliding block 4218 is protruded on the connecting end of the third connecting rod, the first transmission device further comprises a limiting guide plate fixed on the head shell, the limiting guide plate is provided with a first guide groove 42161 and a second guide groove 42162, the first guide groove 42161 is an arc-shaped sliding groove, the second guide groove 42162 is a vertical sliding groove, the first sliding block 4217 is slidably arranged in the first guide groove 42161, and the second sliding block 4218 is slidably arranged in the second guide groove 42162. That is, the stroke path of the first sliding block 4217 is different from that of the second sliding block 4218, and in this way, the precise cooperation between the presser foot assembly 2 and the needle bar assembly 1 in specific time sequence can be achieved.

[0042] In summary, the embroidery machine head provided in the application greatly reduces the length of the needle bar 12 by arranging the guide rod 3, so that the needle bar 12 has better stability during operation. In addition, the driving of the needle bar 12 by the pressure head 11 instead of the traditional driving mode of clamping the middle part of the needle bar by the sleeve, and the larger engagement area between the clamping piece 432 and the clamping groove 111 enable the needle bar 12 to bear force better, so that thicker and harder fabrics can be embroidered, and the deformation of the needle bar 12 during movement is effectively avoided, and the rate of broken needles and defective products is reduced.

[0043] The basic principle of the application is described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the necessary possession of each embodiment of the application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the application which must use the above specific details to realize.

[0044] The block diagram of the device, apparatus, equipment, system involved in the application is only an illustrative example and is not intended to require or imply that the connection, arrangement and configuration shown in the block diagram must be connected, arranged and configured. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged and configured in any way. Words such as "include", "contain", "have" and the like are open-ended words, which mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0045] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0046] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0047] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. An embroidery machine head, characterized in that: include: A needle bar assembly, comprising a pressure head and a needle bar, wherein the pressure head is clamped on the top of the needle bar; A presser foot assembly, the presser foot assembly comprising a connected guide sleeve and a presser foot piece, the presser foot piece being sleeved on the needle rod, the guide sleeve being sleeved on the needle rod and being located between the press head and the presser foot piece; a guide rod, the guide rod passing through the pressure head and the guide sleeve to be arranged parallel to the needle bar, the guide rod located between the pressure head and the guide sleeve being sleeved with a presser foot spring, and the guide rod located below the guide sleeve being sleeved with a return spring; and The driving mechanism includes a guide shaft, a power transmission device, and a first sliding member and a second sliding member slidingly arranged on the guide shaft. The guide shaft is arranged parallel to the needle bar. The power transmission device is drivably connected to the first sliding member and the second sliding member. The first sliding member can be connected to the pressure head and rise and fall synchronously. The second sliding member is dragged under the guide sleeve.

2. The embroidery machine head according to claim 1, characterized in that: The first sliding member includes a first sliding sleeve and a clamping member, the clamping member is hinged to the first sliding sleeve, and a torsion spring is provided between the clamping member and the first sliding sleeve. The second sliding member includes a second sliding sleeve and a support block, and the support block is protrudingly provided on the second sliding sleeve.

3. The embroidery machine head according to claim 2, characterized in that: The power transmission device includes a first transmission device and a second transmission device. The first transmission device is drivably connected to the first sleeve and the second sleeve. The second transmission device can be connected to the clamping member to control the clamping member to rotate on the first sleeve.

4. The embroidery machine head according to claim 3, characterized in that: The second transmission device includes a second drive motor and a swing arm. One end of the swing arm is rotationally connected to the second drive motor, and the other end is provided with a swing head.

5. The embroidery machine head according to claim 4, characterized in that: The clamping member is provided with a clamping block and a stopper, and the pressure head is provided with a clamping slot. The clamping block can be clamped in the clamping slot, and the stopper is arranged in front of the swing head. When the swing arm is driven to swing, the swing head abuts against the stopper and pushes the clamping member to rotate, so as to realize the clutch between the clamping member and the pressure head.

6. The embroidery machine head according to claim 5, characterized in that: The guide sleeve is provided with a protruding block, and the supporting block can be supported under the protruding block to drive the guide sleeve to rise.

7. The embroidery machine head according to claim 6, characterized in that: It also includes a machine head shell, in which the needle bar assembly, the presser foot assembly, the guide rod and the driving mechanism are all arranged.

8. The embroidery machine head according to claim 7, characterized in that: The first transmission device includes a cam assembly, a three-eye connecting rod, a first connecting rod, a second connecting rod and a third connecting rod which are sequentially connected in transmission. The first connecting rod is drivably connected to the first sliding member, and the third connecting rod is drivably connected to the second sliding member.

9. The embroidery machine head according to claim 8, characterized in that: A first sliding block is protrudingly provided on the connecting end of the second connecting rod and the third connecting rod, and a second sliding block is protrudingly provided on the connecting end of the third connecting rod and the second sliding member.

10. The embroidery machine head according to claim 9, characterized in that: The first transmission device also includes a limiting guide plate fixed on the head shell, and a first guide groove and a second guide groove are provided on the limiting guide plate. The first guide groove is an arc groove, and the second guide groove is a vertical groove. The first slider can be slidably set in the first guide groove, and the second slider can be slidably set in the second guide groove.

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