High head type sewing machine

Abstract

A high head type sewing machine, at least comprising a machine housing having an upper housing portion and a lower housing portion, a sewing needle assembly being provided at one end of the upper housing portion, and a raised portion corresponding to below the sewing needle assembly being provided at one end of the lower housing portion, a sewing flat surface being provided at the top surface of the raised portion, and the raised portion being used for sleeving non-flat articles as sewing purposes.

Description

Technical Field

[0001] This invention relates to a high-head sewing machine, which is a sewing machine for sewing non-flat items, and is especially suitable for sewing shoes. Background Technology

[0002] The sewing industry has become quite sophisticated, with sewing machines offering more precise operations and even the development of sewing machines capable of sewing special accessories. However, existing sewing machine tables are all flat sewing platforms, unsuitable for sewing non-flat items (curved contours, cover shapes, or bag shapes), such as shoes and fabric bags, because these items have many horizontal or vertical seams that are difficult to operate on a flat sewing platform.

[0003] Furthermore, existing sewing machine tables require the machine to be laid down for maintenance, which is quite difficult due to the machine's considerable weight. Summary of the Invention

[0004] To address the above problems, the purpose of this invention is to provide a high-head sewing machine. To solve the aforementioned technical problems, this invention is implemented as follows:

[0005] The high-head sewing machine of the present invention includes at least: a housing having an upper housing portion and a lower housing portion, a sewing needle assembly being disposed at one end of the upper housing portion, and a raised portion corresponding to the lower part of the lower housing portion being disposed at one end of the lower housing portion, the top surface of the raised portion having a sewing plane; a feed tooth assembly being installed in the raised portion, the feed tooth assembly having a front feed tooth and a rear feed tooth located in the sewing plane; a first feed lifting transmission mechanism being installed in the lower housing portion and located on one side below the feed tooth assembly; a second feed lifting transmission mechanism being installed in the lower housing portion and located on the other side below the feed tooth assembly, the second feed lifting transmission mechanism and the first feed lifting transmission mechanism being used together to drive the feed tooth assembly to perform vertical movement; a front feed transmission mechanism being installed in the lower housing portion for independently driving the front feed tooth to perform horizontal movement; and a rear feed transmission mechanism being installed in the lower housing portion for independently driving the rear feed tooth to perform horizontal movement. A yarn guiding transmission mechanism is installed within the lower housing and the raised portion. This mechanism drives a yarn guiding element to perform an up-and-down twisting motion. The yarn guiding element is fixed on a pivot and installed below the front and rear feed teeth. A needle guard transmission mechanism is installed within the lower housing and the raised portion. This mechanism drives a needle guard element to perform a horizontal reciprocating oscillating motion. The needle guard element is installed below the front and rear feed teeth. A limiting transmission mechanism is installed within the... Within the lower shell and the raised section, the limiting transmission mechanism is used to drive a sleeve block to perform a horizontal reciprocating swing motion. The sleeve block is fitted on the pivot, so that the sleeve block can also drive the yarn guide element on the pivot to perform a horizontal reciprocating swing motion. A driving device is provided in the housing to drive the first feeding lifting transmission mechanism, the second feeding lifting transmission mechanism, the front feeding transmission mechanism, the rear feeding transmission mechanism, the yarn guide transmission mechanism, the needle guard transmission mechanism, and the limiting transmission mechanism.

[0006] In a preferred embodiment, a first actuating arm is fixedly provided at the lower end of the front feeding tooth, and a through groove is provided below the first actuating arm. A second actuating arm is fixedly provided at the lower end of the rear feeding tooth. The first actuating arm and the second actuating arm are vertically attached to the raised part. A horizontal first sliding groove passes through one side below the first actuating arm and the second actuating arm, and a horizontal second sliding groove passes through the other side.

[0007] In a preferred embodiment, the first feeding lifting transmission mechanism has a first slider housed in the first slide groove, and a first cam is pivotally disposed in the first slider. The second feeding lifting transmission mechanism has a second slider housed in the second slide groove, and an eccentric rotating block is pivotally disposed in the second slider. The driving device is used to drive the first cam and the eccentric rotating block to rotate.

[0008] In a preferred embodiment, a torsion block is fixed to the pivot and pivotally mounted to one end of a towing rod. The other end of the towing rod is pivotally mounted to one end of a rocker block, which can swing around with its center position as the axis. A brake sleeve is pivotally mounted below the other end of the rocker block, and a second cam is installed inside the brake sleeve. The guard pin element is connected to a first rocker arm, and an elongated first brake groove is formed below the first rocker arm. A first pendulum block is placed inside the first brake groove. One end of the first pendulum block is fixed to one end of a first brake shaft, and the other end of the first brake shaft is fixed to one end of a first brake arm. The other end of the first brake arm is pivotally mounted above a top block, and a third cam is installed below the top block. The first brake shaft passes through the rocker block. The middle position allows the rocker block to swing around the first brake shaft as its axis. The sleeve block is connected to a second rocker arm, which is located between the first rocker arm and the second actuating arm. The second rocker arm and the first rocker arm are pivotally connected to each other at the middle position. A long second brake groove is formed below the second rocker arm. The second brake groove contains a second pendulum block. One end of the second pendulum block is fixed to one end of a second brake shaft. The other end of the second brake shaft is fixed to one end of a second brake arm. The other end of the second brake arm is pivotally connected to one side of a push-pull block. A fourth cam is installed in the push-pull block. The drive device is connected to a first drive shaft, which can be connected in series and fixed to drive the first cam, the second cam, the third cam, and the fourth cam.

[0009] In a preferred embodiment, the front feeding transmission mechanism has a first traction block, one end of which is pivotally mounted below the first actuating arm, and the other end of which is pivotally mounted to a first swing block. The rear feeding transmission mechanism has a second traction block, one end of which passes through the through slot and is pivotally mounted below the second actuating arm, and the other end of which is pivotally mounted to a second swing block. The driving device is used to drive the first swing block and the second swing block to swing.

[0010] In a preferred embodiment, a torsion block is fixed on the pivot and pivotally mounted on one end of a towing rod. The other end of the towing rod is pivotally mounted on one end of a rocker block. The rocker block can swing with its center position as the axis. A brake sleeve is pivotally mounted below the other end of the rocker block. A second cam is installed inside the brake sleeve. The drive device is used to drive the second cam to rotate.

[0011] In a preferred embodiment, the needle guard element is provided with a first rocker arm, and an elongated first brake groove is formed below the first rocker arm. A first pendulum block is placed inside the first brake groove. One end of the first pendulum block is fixed to one end of a first brake shaft, and the other end of the first brake shaft is fixed to one end of a first brake arm. The other end of the first brake arm is pivotally mounted above a top block. A third cam is installed below the top block, and the driving device is used to drive the third cam to rotate.

[0012] In a preferred embodiment, the sleeve is provided with a second rocker arm, and the second rocker arm is pivotally connected to the first rocker arm at the middle position. An elongated second brake groove is formed below the second rocker arm, and a second swing block is placed in the second brake groove. One end of the second swing block is fixed to one end of a second brake shaft, and the other end of the second brake shaft is fixed to one end of a second brake arm. The other end of the second brake arm is pivotally connected to one side of a push-pull block. A fourth cam is installed in the push-pull block, and the driving device is used to drive the fourth cam to rotate.

[0013] In a preferred embodiment, a plurality of door panels are mounted on the lower shell portion and the raised portion.

[0014] The beneficial effects of this invention are:

[0015] The high-head sewing machine of the present invention has a structurally designed high structure that can accommodate non-planar items, providing support for non-planar items and facilitating angle adjustment, thus providing convenience for sewing operations. In addition, the internal transmission structure is also integrated and a door panel is provided for easy maintenance, allowing for quick maintenance simply by opening the door panel. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the high-head sewing machine of the present invention. Figure 1 ;

[0017] Figure 2 This is a partial three-dimensional schematic diagram of the internal structure of the high-head sewing machine of the present invention. Figure 1 ;

[0018] Figure 3 This is a partial three-dimensional schematic diagram of the internal structure of the high-head sewing machine of the present invention. Figure 2 ;

[0019] Figure 4 This is a partial three-dimensional exploded view of the internal structure of the high-head sewing machine of the present invention. Figure 1 ;

[0020] Figure 5 This is a partial three-dimensional exploded view of the internal structure of the high-head sewing machine of the present invention. Figure 2 ;

[0021] Figure 6 This is a three-dimensional schematic diagram of the high-head sewing machine of the present invention. Figure 2 ;

[0022] Figure 7 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 1 ;

[0023] Figure 8 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 2 ;

[0024] Figure 9 This is a partial three-dimensional exploded view of the internal structure of the high-head sewing machine of the present invention. Figure 3 ;

[0025] Figure 10 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 3 ;

[0026] Figure 11 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 4 ;

[0027] Figure 12 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 5 ;

[0028] Figure 13 This is a schematic diagram of the internal structure and operation of the high-head sewing machine of the present invention. Figure 6 ;

[0029] Figure 14 This is a three-dimensional schematic diagram of the door panel of the high-head sewing machine of the present invention when opened.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1: Housing; 10: Drive unit; 101: First drive shaft; 102: Second drive shaft; 103: Third drive shaft; 104: Fourth drive shaft; 11: Upper shell; 12: Lower shell; 13: Sewing needle assembly; 14: Raised section; 141: Sewing plane; 15: Door panel; 2: Feeding tooth assembly; 21: Front feeding tooth; 22: Rear feeding tooth; 23: First actuating arm; 231: Through groove; 24: Second actuating arm; 25: First slide rail; 26: Second slide rail; 3: First feeding lifting transmission mechanism; 31: First slider; 32: First cam; 4: Second feeding lifting transmission mechanism; 41: Second slider; 42: Eccentric rotating block; 5: Front feeding transmission mechanism; 51: First traction block; 52: First suspension block; 6 61: Rear feed transmission mechanism; 62: Second traction block; 63: Second swing block; 64: Perforation; 7: Correction mark; 7: Yarn guide transmission mechanism; 71: Yarn guide element; 72: Pivot; 73: Torsion block; 74: Trailing rod; 75: Swing block; 76: Brake sleeve; 77: Second cam; 8: Needle protection transmission mechanism; 81: Needle protection element; 82: First rocker arm; 83: First brake groove; 84: First swing block; 85: First brake shaft; 86: First brake arm; 87: Top block; 88: Third cam; 9: Limit transmission mechanism; 91: Sleeve block; 92: Second rocker arm; 93: Second brake groove; 94: Second swing block; 95: Second brake shaft; 96: Second brake arm; 97: Push-pull block; 98: Fourth cam. Detailed Implementation

[0032] Other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings.

[0033] The terms "top surface," "bottom surface," and "side surface" used to describe the component names disclosed in this specification are intended to help to identify the positional relationships between the various plate-like structures. The orientation of the actual product structure may change depending on the placement angle or the user's location, and should not be construed as limiting the scope equally covered by this invention.

[0034] The term "above" used to describe the position of a structure, as disclosed in this specification, refers to any surface position of the structure, and is not the commonly used directional "above" or "on top." The terms "above" and "below" used to describe the position of a structure refer to the directionality of the structural position under conventional use.

[0035] The terms "fixed," "connected," "installed," "sleeved," "set," or "set" used in this specification to describe structural assembly relationships generally refer to multiple structures that will not easily separate or fall off after assembly. These connections can be fixed, detachable, or integrally formed; they can be mechanical or electrical; they can be direct physical connections or indirect connections through an intermediate medium; and they can be internal connections between two components, for example, using threads, latches, fasteners, nails, adhesives, or high-frequency welding. Furthermore, "sleeved" or "set" indicates that one structure is assembled on the outside of another structure.

[0036] The term "pivotal" or "pivotal connection" used in this specification to describe structural assembly relationships refers to the combination of any two of a pivot, column, sphere, and hole or groove, or the assembly of multiple structures with bearings, so that the multiple structures can still rotate or slide freely within a limited range after assembly without easily separating or falling off.

[0037] Please see Figures 1-5 As shown in the figure, the high-head sewing machine of the present invention includes a machine housing 1, a feeding tooth assembly 2, a first feeding lifting transmission mechanism 3, a second feeding lifting transmission mechanism 4, a front feeding transmission mechanism 5, a rear feeding transmission mechanism 6, a yarn guiding transmission mechanism 7, a needle guarding transmission mechanism 8, a limiting transmission mechanism 9, and a driving device 10.

[0038] Please see Figure 1 The housing 1 has an upper housing portion 11 and a lower housing portion 12. A sewing needle assembly 13 is provided at one end of the upper housing portion 11, and a raised portion 14 corresponding to the lower part of the sewing needle assembly 13 is provided at one end of the lower housing portion 12. A sewing plane 141 is provided on the top surface of the raised portion 14. Please refer to [link / reference]. Figure 6 The raised portion 14 can be used to fit non-planar items for sewing purposes.

[0039] Please see Figure 2 , Figure 4 and Figure 5The feeding tooth assembly 2 is installed in the raised part 14. The feeding tooth assembly 2 has a front feeding tooth 21 and a rear feeding tooth 22 located in the sewing plane 141. A first actuating arm 23 is fixed at the lower end of the front feeding tooth 21. A through groove 231 is opened below the first actuating arm 23. A second actuating arm 24 is fixed at the lower end of the rear feeding tooth 22. The first actuating arm 23 and the second actuating arm 24 are flat plates and are upright and attached to the raised part 14. The lower parts of the first actuating arm 23 and the second actuating arm 24 have corresponding outer contours, so that the lower outer contours of the first actuating arm 23 and the second actuating arm 24 can match when they are attached. A horizontal first sliding groove 25 runs through one side of the lower part of the first actuating arm 23 and the second actuating arm 24, and a horizontal second sliding groove 26 runs through the other side.

[0040] Please refer to Figure 5 The first feeding lifting transmission mechanism 3 is installed in the lower shell 12. The first feeding lifting transmission mechanism 3 has a first slider 31 housed in the first slide groove 25. A first cam 32 is pivotally mounted in the first slider 31.

[0041] Please refer to Figure 5 The second feeding lifting transmission mechanism 4 is installed in the lower shell 12. The second feeding lifting transmission mechanism 4 has a second slider 41 housed in the second slide groove 26. An eccentric rotating block 42 is pivotally mounted in the second slider 41.

[0042] Please refer to Figure 7 When the first cam 32 and the eccentric rotating block 42 are driven, they rotate completely (i.e., a full 360° rotation). The maximum outer diameter of the first cam 32 and the eccentric rotating block 42 will deviate from the rotation axis during rotation. Due to the restriction of the horizontally arranged first slide 25 and the second slide 26, the horizontal force when the first cam 32 and the eccentric rotating block 42 rotate eccentrically can only make horizontal displacement in the first slide 25 and the second slide 26 respectively. The vertical force will drive the first action arm 23 and the second action arm 24 to make vertical displacement, driving the front feed tooth 21 and the rear feed tooth 22 to move up or down together.

[0043] Please refer to Figure 4 The front feeding transmission mechanism 5 is installed in the lower shell 12. The front feeding transmission mechanism 5 has a first traction block 51. One end of the first traction block 51 is pivotally mounted below the first action arm 23, and the other end is pivotally mounted with a first suspension block 52.

[0044] Please refer to Figure 8When the first pendulum block 52 is driven, it swings horizontally within a predetermined angle range. The first traction block 51 then drives the first action arm 23 to move horizontally as the first pendulum block 52 swings, so as to drive the front feed tooth 21 to move horizontally independently.

[0045] Please refer to Figure 4 The rear feeding transmission mechanism 6 is installed in the lower shell 12. The rear feeding transmission mechanism 6 has a second traction block 61. One end of the second traction block 61 passes through the through groove 231 and is pivotally mounted below the second action arm 24, while the other end is pivotally mounted on a second suspension block 62.

[0046] Please refer to Figure 8 When the second pendulum block 62 is driven, it also swings horizontally within a predetermined angle range. The second traction block 61 then drives the second action arm 24 to move horizontally as the second pendulum block 62 swings, so as to drive the horizontal movement of the rear feed tooth 22 independently.

[0047] Therefore, please refer to Figure 2 , Figures 6-8 The first feeding lifting transmission mechanism 3 and the second feeding lifting transmission mechanism 4 enable the front feeding tooth 21 and the rear feeding tooth 22 to move vertically together, while the front feeding transmission mechanism 5 and the rear feeding transmission mechanism 6 enable the front feeding tooth 21 and the rear feeding tooth 22 to move horizontally respectively. After the vertical and horizontal movement time and stroke are coordinated and adjusted, the front feeding tooth 21 and the rear feeding tooth 22 can perform the action of feeding (sewing raw material) on the sewing plane 141 (the specific action of feeding is a sewing technique, so it will not be described in detail).

[0048] Please see Figure 2 , Figure 9 The yarn guiding transmission mechanism 7 is installed in the lower shell 12 and the raised part 14. The yarn guiding transmission mechanism 7 has a yarn guiding element 71 corresponding to the front feed tooth 21 and the rear feed tooth 22. The yarn guiding element 71 is fixed on a pivot 72. A torsion block 73 is also fixed on the pivot 72. The torsion block 73 is pivotally mounted on one end of a drag bar 74. The other end of the drag bar 74 is pivotally mounted on one end of a rocker block 75. The rocker block 75 can swing with the middle position as the axis. A brake sleeve 76 is pivotally mounted below the other end of the rocker block 75. A second cam 77 is installed in the brake sleeve 76.

[0049] Please refer to Figures 9-11When the second cam 77 is driven, it rotates fully. During rotation, the second cam 77 deviates from the axis of rotation and pushes the brake sleeve 76 outwards at its furthest point from the axis of rotation. The brake sleeve 76, located on the outside, is restrained above by the rocker block 75, and therefore can only move in the direction of the push. The upward movement of the brake sleeve 76 causes one end of the rocker block 75 to swing upwards as well. This swinging motion causes the other end of the rocker block 75 to pull the towing rod 74 downwards. When moving downwards, the torsion block 73 and the pivot 72 are driven to twist downwards around the pivot 72. Conversely, the downward displacement of the brake sleeve 76 will drive one end of the rocker block 75 downwards as well, and the swing will cause the other end of the rocker block 75 to pull the drag bar 74 upwards. When the drag bar 74 moves upwards, it drives the torsion block 73 and the pivot 72 to twist upwards around the pivot 72. Therefore, the pivot 72 can also drive the yarn guide element 71 to perform an up-and-down twisting action.

[0050] Please see Figure 2 , Figure 9 , Figure 12 The needle protection transmission mechanism 8 is installed in the lower shell 12 and the raised part 14. The needle protection transmission mechanism 8 has a needle protection element 81 corresponding to the front feed tooth 21 and the rear feed tooth 22. The needle protection element 81 is connected to a first rocker arm 82. A long first brake groove 83 is opened below the first rocker arm 82. A first swing block 84 is placed in the first brake groove 83. One end of the first swing block 84 is fixed to one end of a first brake shaft 85. The other end of the first brake shaft 85 is fixed to one end of a first brake arm 86. The other end of the first brake arm 86 is pivotally mounted above a top block 87. A third cam 88 is installed in the lower part of the top block 87. In this embodiment, the first brake shaft 85 passes through the middle position of the swing block 75, so that the swing block 75 swings around the first brake shaft 85 as the axis.

[0051] Please see Figure 2 , Figure 9 , Figure 13The limiting transmission mechanism 9 is installed in the lower shell 12 and the raised part 14. The limiting transmission mechanism 9 has a sleeve block 91 installed on the pivot 72. The sleeve block 91 is connected to a second rocker arm 92. The second rocker arm 92 is located between the first rocker arm 82 and the second actuating arm 24. The second rocker arm 92 and the first rocker arm 82 are pivotally connected to each other at the middle position. A long second brake groove 93 is opened below the second rocker arm 92. A second swing block 94 is placed in the second brake groove 93. One end of the second swing block 94 is fixed to one end of a second brake shaft 95. The other end of the second brake shaft 95 is fixed to one end of a second brake arm 96. The other end of the second brake arm 96 is pivotally connected to one side of a push-pull block 97. A fourth cam 98 is installed in the push-pull block 97.

[0052] Please refer to Figure 2 , Figure 9 , Figures 12-13 When the third cam 88 is driven, it rotates fully. During rotation, the third cam 88 deviates from the axis of rotation and pushes the top block 87 outwards at its furthest point from the axis of rotation. The top block 87, located on the outside, is restrained above by the first brake arm 86, and therefore can only move in the direction of the push. The upward movement of the top block 87 causes one end of the first brake arm 86 to swing upwards. This swinging motion causes the first brake shaft 85 at the other end of the first brake arm 86 and the first swing block 84 at the other end of the first brake shaft 85 to move in the same direction. With a slight rotation, the first pendulum block 84 can push the first rocker arm 82 downward within the first brake groove 83, causing the first rocker arm 82 to swing the needle protection element 81 horizontally around the central pivot position. Conversely, the downward displacement of the top block 87 will drive one end of the first brake arm 86 downward as well, thereby successively driving the first brake shaft 85, the first pendulum block 84, the first rocker arm 82 and the needle protection element 81 to complete opposite actions. Therefore, the first rocker arm 82 can drive the needle protection element 81 to perform horizontal reciprocating swing.

[0053] When the fourth cam 98 is driven, it rotates fully. During rotation, the fourth cam 98 deviates from the rotation axis and pushes the push-pull block 97 outward at its furthest point from the rotation axis. The push-pull block 97, located on the outside, is restrained on one side by the second brake arm 96, and therefore can only move in the direction of the push. The force of the push-pull block 97 moving towards the second brake arm 96 pushes one end of the second brake arm 96. The second brake shaft 95 at the other end of the pushed second brake arm 96 and the second swing block 94 at the other end of the second brake shaft 95 rotate slightly in the same direction. 4. When rotating slightly, the second rocker arm 92 is pushed down in the second brake groove 93, so that the second rocker arm 92 drives the sleeve block 91 and the pivot 72 to swing horizontally with the middle pivot position as the axis. Conversely, the force of the push-pull block 97 moving away from the second brake arm 96 will pull back one end of the second brake arm 96, so as to successively drive the second brake shaft 95, the second swing block 94, the second rocker arm 92, the sleeve block 91 and the pivot 72 to complete the reverse action. Therefore, the second rocker arm 92 can drive the pivot 72 together with the yarn guide element 71 on the pivot 72 to swing horizontally back and forth.

[0054] Please see Figures 1-5 The drive device 10 is installed in the housing 1 and can be driven manually or electrically. The drive device 10 drives the first cam 32, the eccentric rotating block 42, the first swing block 52, the second swing block 62, the second cam 77, the third cam 88 and the fourth cam 98 to swing or rotate within a predetermined angle range through multiple shafts. In this embodiment, the drive device 10 is respectively connected to a first drive shaft 101, a second drive shaft 102, a third drive shaft 103 and a fourth drive shaft 104. The first drive shaft 101 can be connected in series to fix the first cam 32, the second cam 77, the third cam 88 and the fourth cam 98. The second drive shaft 102 is fixed to the eccentric rotating block 42. The third drive shaft 103 is fixed to the first swing block 52. The fourth drive shaft 104 is fixed to the second swing block 62.

[0055] Please refer to Figure 4 , Figure 8 The second suspension block 62 has a through hole 63, and the fourth drive shaft 104 is fixed in the through hole 63. A calibration mark 64 is provided on the outside of the through hole 63 and on the fourth drive shaft 104 at a corresponding position. When the calibration mark 64 on the outside of the through hole 63 and on the fourth drive shaft 104 are in the corresponding position, it means that the operation is normal. If the calibration mark 64 on the outside of the through hole 63 and on the fourth drive shaft 104 is misaligned, it means that the operation is abnormal.

[0056] Please see Figure 1, Figure 14 For ease of maintenance, multiple door panels 15 can be installed on the lower shell 12 and the raised part 14. Each door panel 15 can be lifted or pushed open through a sliding groove to facilitate maintenance or repair work.

[0057] The above embodiments are merely some preferred embodiments of the present invention, and are not intended to limit the present invention. Any equivalent changes or modifications made by any person skilled in the art after understanding the foregoing technical features and embodiments of the present invention without departing from the spirit and scope of the present invention shall still fall within the scope of the present invention, and the patent protection scope of the present invention shall be determined by the claims appended to this specification.

Claims

1. A high-head sewing machine, characterized in that, include: A housing has an upper housing and a lower housing. A sewing needle assembly is provided at one end of the upper housing, and a raised portion corresponding to the lower part of the lower housing is provided at one end. A sewing plane is provided on the top surface of the raised portion. A feeding tooth assembly is installed in the raised part. The feeding tooth assembly has a front feeding tooth and a rear feeding tooth located in the sewing plane. A first actuating arm is fixed at the lower end of the front feeding tooth. A through groove is opened below the first actuating arm. A second actuating arm is fixed at the lower end of the rear feeding tooth. The first actuating arm and the second actuating arm are vertically attached to the raised part. A horizontal first sliding groove passes through one side below the first actuating arm and the second actuating arm, and a horizontal second sliding groove passes through the other side. A first feeding lifting transmission mechanism is installed in the lower housing and located on one side below the feeding tooth assembly. The first feeding lifting transmission mechanism has a first slider housed in the first slide groove, and a first cam is pivotally mounted in the first slider. A second feeding lifting transmission mechanism is installed inside the lower housing and located on the other side below the feeding tooth assembly. The second feeding lifting transmission mechanism and the first feeding lifting transmission mechanism are used together to drive the feeding tooth assembly to perform vertical movement. The second feeding lifting transmission mechanism has a second slider housed in the second slide groove, and an eccentric rotating block is pivotally mounted inside the second slider. A front feeding transmission mechanism is installed in the lower housing and is used to drive the front feeding tooth to perform horizontal movement independently. A rear feeding transmission mechanism is installed in the lower housing to independently drive the rear feeding tooth to perform horizontal movement. A yarn guiding transmission mechanism is installed in the lower shell and the raised part. The yarn guiding transmission mechanism is used to drive a yarn guiding element to perform up and down twisting action. The yarn guiding element is fixed on a pivot and installed below the front feed tooth and the rear feed tooth. A needle protection drive mechanism is installed in the lower shell and the raised part. The needle protection drive mechanism is used to drive a needle protection element to perform a horizontal reciprocating oscillating motion. The needle protection element is installed below the front feed tooth and the rear feed tooth. A limiting transmission mechanism is installed within the lower housing and the raised portion. This limiting transmission mechanism drives a sleeve block to perform a horizontal reciprocating oscillating motion. The sleeve block is fitted onto the pivot, allowing it to simultaneously drive the yarn guide element on the pivot to perform a horizontal reciprocating oscillating motion. A drive device is provided in the housing to drive the first feeding lifting transmission mechanism, the second feeding lifting transmission mechanism, the front feeding transmission mechanism, the rear feeding transmission mechanism, the yarn guiding transmission mechanism, the needle protection transmission mechanism, and the limiting transmission mechanism. The drive device is used to drive the first cam and the eccentric rotating block to rotate.

2. The high-head sewing machine according to claim 1, characterized in that, A torsion block is fixed to the pivot, and the torsion block is pivotally mounted to one end of a towing rod. The other end of the towing rod is pivotally mounted to one end of a rocker block, which swings around its central position. A brake sleeve is pivotally mounted below the other end of the rocker block, and a second cam is installed inside the brake sleeve. A first rocker arm is connected to the guard pin element, and an elongated first brake groove is formed below the first rocker arm. A first pendulum block is placed inside the first brake groove. One end of the first pendulum block is fixed to one end of a first brake shaft, and the other end of the first brake shaft is fixed to one end of a first brake arm. The other end of the first brake arm is pivotally mounted above a top block, and below the top block... The device contains a third cam. The first brake shaft passes through the middle of the rocker block, which swings around the first brake shaft. A second rocker arm is connected to the sleeve, located between the first rocker arm and the second actuating arm, and pivotally connected to the first rocker arm at their middle positions. A long second brake groove is formed below the second rocker arm, containing a second pendulum block. One end of the second pendulum block is fixed to one end of a second brake shaft, and the other end of the second brake shaft is fixed to one end of a second brake arm. The other end of the second brake arm is pivotally connected to one side of a push-pull block, which contains a fourth cam.

3. The high-head sewing machine according to claim 2, characterized in that, The drive device is connected to a first drive shaft, which is connected in series and fixed to drive the first cam, the second cam, the third cam and the fourth cam.

4. The high-head sewing machine according to claim 1, characterized in that, The front feeding transmission mechanism has a first traction block, one end of which is pivotally mounted below the first actuating arm, and the other end of which is pivotally mounted to a first swing block. The rear feeding transmission mechanism has a second traction block, one end of which passes through the through slot and is pivotally mounted below the second actuating arm, and the other end of which is pivotally mounted to a second swing block. The driving device is used to drive the first swing block and the second swing block to swing.

5. The high-head sewing machine according to claim 1, characterized in that, A torsion block is fixed on the pivot and pivotally mounted on one end of a towing rod. The other end of the towing rod is pivotally mounted on one end of a rocker block. The rocker block swings around the middle position as its axis. A brake sleeve is pivotally mounted below the other end of the rocker block. A second cam is installed inside the brake sleeve. The drive device is used to drive the second cam to rotate.

6. The high-head sewing machine according to claim 1, characterized in that, The needle guard is provided with a first rocker arm, and an elongated first brake groove is formed below the first rocker arm. A first pendulum block is placed inside the first brake groove. One end of the first pendulum block is fixed to one end of a first brake shaft, and the other end of the first brake shaft is fixed to one end of a first brake arm. The other end of the first brake arm is pivotally mounted above a top block. A third cam is installed inside the bottom of the top block. The drive device is used to drive the third cam to rotate.

7. The high-head sewing machine according to claim 6, characterized in that, The sleeve is provided with a second rocker arm, which is pivotally connected to the first rocker arm at the middle position. A long second brake groove is provided below the second rocker arm. A second swing block is placed in the second brake groove. One end of the second swing block is fixed to one end of a second brake shaft. The other end of the second brake shaft is fixed to one end of a second brake arm. The other end of the second brake arm is pivotally connected to one side of a push-pull block. A fourth cam is installed in the push-pull block. The drive device is used to drive the fourth cam to rotate.

8. The high-head sewing machine according to claim 1, characterized in that, Multiple door panels are installed on the lower shell and the raised part.

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