Feeding transmission structure for presser foot wheel of upper pulling machine

Abstract

The utility model discloses a feeding transmission structure for a presser foot wheel of an upper pulling machine, which comprises a differential feeding assembly, a transmission assembly and a control assembly, and the differential feeding assembly comprises a differential feeding motor and a telescopic connecting shaft group; a guide rod extending outwards relative to the material pressing support is arranged on one side of the material pressing support set, an assembling groove and a transmission groove communicated with the assembling groove are formed in the other side of the material pressing support set, and a universal joint is arranged in the transmission groove; the first gear set is arranged in the assembling groove; the presser foot connecting seat is arranged below the material pressing bracket; and a second gear set and a presser foot wheel are arranged in the presser foot connecting seat. According to the utility model, the presser foot wheel of the upper pulling machine obtains an independent power source, and feeding in the sewing process of the presser foot wheel is controlled on the basis, so that an operator can control a vamp.

Description

Technical Field

[0001] This utility model relates to the field of footwear production equipment, and in particular to a feeding transmission structure for the presser wheel of a lasting machine. Background Technology

[0002] In existing lasting machines, the main shaft drives the needle bar and hook for sewing. Simultaneously, the main shaft also drives the feed wheel to rotate intermittently, causing it to feed material. The presser foot wheel is pivotally connected to the bottom of the presser foot frame and lacks its own power, preventing it from rotating independently. During the lasting process of sewing the insole to the upper, because the presser foot wheel cannot rotate independently, the operator must use both hands to control the bending of the upper along the contour of the insole to sew it to the upper. This results in high labor intensity and reduced sewing efficiency. Some lasting machines also use a stepper motor mounted directly above the presser frame as the power source for the presser foot wheel, but this placement in front of the operator significantly obstructs their field of vision. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide a feeding transmission structure for the presser foot wheel of a lasting machine. This structure allows the presser foot wheel to have an independent drive source. By controlling its rotation speed during the sewing process through a program and cooperating with the feeding wheel, it can automatically sew the shoe midsole and upper together. This eliminates the need for operators to control the bending of the shoe upper, significantly reducing the labor intensity of personnel and improving production efficiency.

[0004] To achieve the above objectives, this utility model provides a feeding transmission structure for the presser wheel of a stretcher, comprising:

[0005] A differential feeding assembly, comprising a differential feeding motor and a retractable connecting shaft assembly, wherein the output shaft of the differential feeding motor is connected to a coupling, and the other end of the coupling away from the differential feeding motor is connected to the connecting shaft assembly;

[0006] A pressure support assembly, wherein a guide rod extending outward relative to the pressure support is provided on one side of the pressure support assembly, and an assembly groove and a transmission groove communicating with the assembly groove are provided on the other side of the pressure support assembly, and a universal joint is provided in the transmission groove;

[0007] The first gear set is disposed in the assembly slot, the input end of the first gear set is connected to the connecting shaft set, and the output end of the first gear set is connected to one end of the universal joint.

[0008] The pressure foot connecting seat is located below the pressure support. The pressure foot connecting seat is equipped with a second gear set and a pressure foot wheel. The second gear set is connected to the universal joint and the pressure foot wheel respectively.

[0009] Furthermore, the connecting shaft assembly includes a connecting drive shaft and a gear shaft. The connecting drive shaft is provided with a pin portion, and the gear shaft is provided with a slot for inserting the pin portion. The other end of the gear shaft away from the slot is a round shaft output end. The cooperation between the pin portion and the slot allows the connecting drive shaft and the gear shaft to move axially while maintaining rotational transmission.

[0010] Furthermore, the pressure bracket assembly includes a first pressure bracket and a second pressure bracket. The upper end of the first pressure bracket is provided with a first through hole for the connecting shaft assembly to pass through, and the upper end of the first pressure bracket is detachably connected to the upper end of the second pressure bracket. The guide rod is fixed to the lower end of the first pressure bracket, and the guide rod is arranged in a direction away from the second pressure bracket. The assembly groove and the transmission groove are both provided on the second pressure bracket. This split structure reduces the machining accuracy requirements of the pressure bracket and improves the product yield.

[0011] Furthermore, the first gear set includes a first arc-tooth bevel gear and a second arc-tooth bevel gear that mesh with each other, and the axes of the first and second arc-tooth bevel gears are set at 90°. The other ends of the first and second arc-tooth bevel gears, away from the meshing point, are respectively connected to a first through hole and a transmission groove through bearings. The first gear set achieves 90° force transmission, better optimizing the setting direction of the pressure roller, etc.

[0012] Furthermore, the presser foot connecting seat is provided with a second through hole and a third through hole, and bearings are provided in both the second through hole and the third through hole. A connecting column is provided on the front side of the presser foot connecting seat, and the presser foot wheel is connected to the connecting column through the provided bearings.

[0013] Furthermore, the second gear set includes a first spur gear and a second spur gear, and a connecting gear is provided on the lower side of the presser wheel. The first spur gear meshes with the connecting gear and the second spur gear respectively.

[0014] Furthermore, the first spur gear, the second spur gear, and the connecting gear have the same meshing module, and the dimensions of the first spur gear and the second spur gear are larger than those of the connecting gear. This ensures that the rotational speed of the differential stepper motor is controlled within a low range during operation, within which the stepper motor output torque is larger and the temperature rise is smaller.

[0015] Furthermore, the presser foot connector also includes an outer cover, which encloses the second gear set and is fixedly connected to the presser foot connector. The outer cover better protects the second gear set from damage and also ensures the safety of the operator.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The differential feeding motor of this structure uses a stepper motor to provide the presser foot wheel with an independent power source. Through program control, the differential speed ratio between the main feeding wheel and the presser foot wheel can be realized, thereby realizing the stitching of the shoe upper and the midsole, reducing the labor intensity of operators and improving production efficiency.

[0018] 2. The differential feeding motor of this utility model is directly installed above the main unit as a power source, but its transmission part and the position of the motor will not affect the operator's field of vision, thus providing a better operating field of vision. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the installation state of the feeding transmission structure of the presser wheel of a stretching machine according to this utility model;

[0021] Figure 2 This is an exploded view of the feeding transmission structure of the presser wheel of a stretcher machine according to this utility model;

[0022] Figure 3 This is a structural schematic diagram of the connecting shaft assembly of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the first pressing bracket of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the second pressing bracket of this utility model;

[0025] Figure 6 This is a structural schematic diagram of the presser foot connecting seat of this utility model;

[0026] Figure 7 This is a schematic diagram of the assembly of the second gear set and the pressure roller of this utility model;

[0027] Figure 8 This is a schematic diagram of the assembly cross-section of the differential feeding assembly, the pressure support assembly, and the universal joint of this utility model.

[0028] The diagram includes:

[0029] 1. Differential feeding assembly; 11. Differential feeding motor; 12. Connecting shaft assembly; 121. Connecting drive shaft; 1211. Pin part; 122. Gear shaft; 1221. Insertion slot; 1222. Round shaft output end; 13. Motor base; 14. Coupling; 2. Pressing bracket assembly; 21. First pressing bracket; 211. First through hole; 22. Second pressing bracket; 221. Assembly slot; 222. Transmission slot; 3. First gear set 31. First spiral bevel gear; 32. Second spiral bevel gear; 4. Presser foot connecting seat; 41. Outer cover; 42. Second through hole; 43. Third through hole; 44. Connecting column; 5. Second gear set; 51. First spur gear; 511. Gear locking pin; 52. Second spur gear; 521. Gear connecting shaft; 6. Guide rod; 7. Universal joint; 8. Presser foot wheel; 81. Connecting gear; 9. Straightening machine main unit; 91. Feeding wheel. Detailed Implementation

[0030] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second", such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0033] Please see Figures 1 to 8 The present invention provides a feeding transmission structure for the presser wheel of a stretcher.

[0034] The feeding transmission structure of the presser wheel of the stretching machine in this embodiment is as follows: Figure 1 As shown, it includes a differential feeding assembly 1, a pressure support assembly 2, a first gear assembly 3, a pressure foot connecting seat 4, and a second gear assembly 5;

[0035] like Figure 1 and Figure 2The aforementioned differential feeding assembly 1 includes a differential feeding motor 11 and a retractable connecting shaft assembly 12. In this embodiment, the differential feeding motor 11 is a stepper motor. To ensure stable operation of the differential feeding motor 11, it is typically fixed to a motor mount 13. The output shaft of the differential feeding motor 11 is connected to a coupling 14, which can be a flexible coupling. The other end of the coupling 14, away from the differential feeding motor 11, is connected to the connecting shaft assembly 12. To achieve the retractable function of the connecting shaft assembly 12, such as... Figure 2 and Figure 3 As shown, in this embodiment, the connecting shaft assembly 12 includes a connecting drive shaft 121 and a gear shaft 122. The connecting drive shaft 121 is provided with a pin portion 1211, and the gear shaft 122 is provided with a insertion groove 1221 for inserting the pin portion 1211. The other end of the gear shaft 122 away from the insertion groove 1221 is a round shaft output end 1222.

[0036] like Figure 4 , Figure 5 and Figure 8 As shown, in this embodiment, a guide rod 6 extending outward relative to the pressure bracket assembly 2 is provided on one side of the pressure bracket assembly 2, and an assembly groove 221 and a transmission groove 222 communicating with the assembly groove 221 are provided on the other side of the pressure bracket assembly 2. A universal joint 7 is provided in the transmission groove 222. Specifically, the pressure bracket assembly 2 includes a first pressure bracket 21 and a second pressure bracket 22. The upper end of the first pressure bracket 21 is provided with a first through hole 211 for passing through the connecting shaft assembly 12, and the upper end of the first pressure bracket 21 is detachably connected to the upper end of the second pressure bracket 22. The guide rod 6 is fixed to the lower end of the first pressure bracket 21, and the guide rod 6 extends away from the second pressure bracket 22. The orientation of the pressure bracket 22 is such that the assembly groove 221 and the transmission groove 222 are both set on the second pressure bracket 22. The first gear set 3 is set in the assembly groove 221. The input end of the first gear set 3 is connected to the connecting shaft group 12, and the output end of the first gear set 3 is connected to one end of the universal joint 7. The first gear set 3 includes a first arc bevel gear 31 and a second arc bevel gear 32 that mesh with each other. The axes of the first arc bevel gear 31 and the second arc bevel gear 32 are set at 90°. The other ends of the first arc bevel gear 31 and the second arc bevel gear 32 that are away from the meshing point are respectively connected to the first through hole 211 and the transmission groove 222 through the provided bearings.

[0037] like Figure 6 and Figure 7As shown, a presser foot connecting seat 4 is located below the presser support. The presser foot connecting seat 4 contains a second gear set 5 and a presser wheel 8. The second gear set 5 is connected to the universal joint 7 and the presser wheel 8 respectively. The presser foot connecting seat 4 also includes an outer cover 41, which encloses the second gear set 5 and is fixedly connected to the presser foot connecting seat 4. Specifically, the presser foot connecting seat 4 has a second through hole 42 and a third through hole 43, both of which contain bearings. A connecting column 44 is located on the front side of the presser foot connecting seat 4, and the presser wheel 8 is connected to the connecting column 44 via the bearings. The second gear set 5 includes a first spur gear 51 and a second spur gear 52. A connecting gear 81 is located on the lower side of the presser wheel 8. The first spur gear 51 and the second spur gear 52 mesh with the connecting gear 81 and the second spur gear 52 respectively. The meshing modules of the first spur gear 51, the second spur gear 52 and the connecting gear 81 are the same, and the dimensions of the first spur gear 51 and the second spur gear 52 are larger than the connecting gear 81. This ensures that the rotation speed of the differential stepper motor is controlled within a low range during operation. Within this range, the stepper motor output torque is larger and the temperature rise is smaller. The first spur gear 51 is connected to a gear locking pin 511, which is locked to a bearing in the second through hole 42. The second spur gear 52 extends upward to form a gear connecting shaft 521, which passes through a bearing in the third through hole 43 and connects to the lower end of the universal joint 7.

[0038] The working principle of this utility model is as follows: When in use, the differential feeding motor 11 and the motor base 13 are first fixed on the upper surface of the lasting machine host 9, so that it will not affect the operator's operating vision. Then, the guide rod 6 is inserted into the connection limiting hole on the host. The presser wheel 8 of this utility model uses an independent differential feeding motor 11 as an independent drive source. The rotation speed of the presser wheel 8 during the sewing process is controlled by the program and, together with the feeding wheel 91 of the lasting machine host 9, the midsole and upper of the shoe can be automatically sewn together. There is no need for the operator to control the bending of the upper, which greatly reduces the labor intensity of the personnel and improves the production efficiency.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A feeding transmission structure for the presser wheel of a stretching machine, characterized in that, include: A differential feeding assembly (1) includes a differential feeding motor (11) and a retractable connecting shaft assembly (12); A pressure support assembly (2) is provided on one side of the pressure support assembly (2) with a guide rod (6) extending outward relative to the pressure support assembly (2), and an assembly groove (221) and a transmission groove (222) communicating with the assembly groove (221) are provided on the other side of the pressure support assembly (2), and a universal joint (7) is provided in the transmission groove (222). The first gear set (3) is set in the assembly slot (221), the input end of the first gear set (3) is connected to the connecting shaft group (12), and the output end of the first gear set (3) is connected to one end of the universal joint (7). The presser foot connecting seat (4) is located below the presser support. The presser foot connecting seat (4) is provided with a second gear set (5) and a presser wheel (8). The second gear set (5) is connected to the universal joint (7) and the presser wheel (8) respectively.

2. The feeding transmission structure of the presser wheel of a stretching machine according to claim 1, characterized in that, The connecting shaft assembly (12) includes a connecting drive shaft (121) and a gear shaft (122). The connecting drive shaft (121) is provided with a pin portion (1211), and the gear shaft (122) is provided with a insertion groove (1221) for inserting the pin portion (1211). The other end of the gear shaft (122) away from the insertion groove (1221) is a round shaft output end (1222).

3. The feeding transmission structure of the presser wheel of a stretching machine according to claim 1, characterized in that, The pressure support assembly (2) includes a first pressure support (21) and a second pressure support (22). The upper end of the first pressure support (21) is provided with a first through hole (211) for passing through the connecting shaft assembly (12). The upper end of the first pressure support (21) is detachably connected to the upper end of the second pressure support (22). The guide rod (6) is fixed to the lower end of the first pressure support (21) and is arranged in a direction away from the second pressure support (22). The assembly groove (221) and the transmission groove (222) are both provided on the second pressure support (22).

4. The feeding transmission structure of the presser wheel of a stretching machine according to claim 3, characterized in that, The first gear set (3) includes a first arc bevel gear (31) and a second arc bevel gear (32) that mesh with each other, and the axes of the first arc bevel gear (31) and the second arc bevel gear (32) are set at 90°. The other ends of the first arc bevel gear (31) and the second arc bevel gear (32) away from the meshing point are respectively connected to the first through hole (211) and the transmission groove (222) through the provided bearings.

5. The feeding transmission structure of the presser wheel of a stretching machine according to claim 1, characterized in that, The presser foot connecting seat (4) is provided with a second through hole (42) and a third through hole (43). Bearings are provided in both the second through hole (42) and the third through hole. A connecting column (44) is provided on the front side of the presser foot connecting seat (4). The presser foot wheel (8) is connected to the connecting column (44) through the provided bearings.

6. The feeding transmission structure of the presser wheel of a stretcher according to claim 5, characterized in that, The second gear set (5) includes a first spur gear (51) and a second spur gear (52). A connecting gear (81) is provided on the lower side of the presser wheel (8). The first spur gear (51) meshes with the connecting gear (81) and the second spur gear (52) respectively.

7. The feeding transmission structure of the presser wheel of a stretching machine according to claim 6, characterized in that, The first spur gear (51), the second spur gear (52), and the connecting gear (81) have the same module, and the dimensions of the first spur gear (51) and the second spur gear (52) are larger than those of the connecting gear (81).

8. The feeding transmission structure of the presser wheel of a stretching machine according to claim 7, characterized in that, The presser foot connecting seat (4) also includes an outer cover (41), which encloses the second gear set (5) and is fixedly connected to the presser foot connecting seat (4).

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