Presser foot lifting structure of upper pulling machine

Abstract

The utility model discloses a presser foot lifting structure of an upper pulling machine, which comprises a driving component, a presser foot lifting component, a presser foot lifting component and a presser foot lifting component, and the driving component comprises a driving motor and a presser foot cam connected with the driving motor; the transmission assembly comprises an ejector rod, a push rod and a material pressing rod, one end of the ejector rod abuts against the presser foot cam, the other end of the ejector rod is connected with the push rod, a receding groove is formed in the other end, away from the ejector rod, of the push rod, a tension spring fixing pin is arranged in the receding groove in a penetrating mode, and the material pressing rod is connected with the tension spring fixing pin. Two end parts of the tension spring fixing pin are fixedly connected with the upper pulling machine; the material pressing rod is of a hollow tubular structure, one end of the material pressing rod abuts against the push rod, the other end of the material pressing rod is connected with a material pressing support, and a material pressing extension spring is arranged in the material pressing rod. According to the automatic presser foot lifting device, automatic presser foot lifting is achieved in the mode that the stepping motor is matched with the cam ejector rod, and the labor intensity of operators can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of footwear production equipment, especially relates to a lifting and pressing foot structure of a lasting machine. BACKGROUND

[0002] The existing market lasting machine lifting and pressing foot usually adopts knee control lifting and pressing foot to rely on the operating personnel to press the operating board of the lifting and pressing foot, the operating personnel's labor intensity is big, and the efficiency is low, and the operating personnel's leg is not suitable for being easily caused by frequent pressing operating board, some lasting machines on the market use cylinders as power sources to realize lifting and pressing foot action, but the noise generated by the pneumatic is big, and the matched air compression device is needed as the stable source of compressed air, which limits the use scene in a certain sense. SUMMARY

[0003] The utility model aims at overcoming the above -mentioned defects in the prior art, providing a lifting and pressing foot structure of a lasting machine, automatic lifting and pressing foot is realized through the mode of stepping motor cooperation cam jacks, the labor intensity of operating personnel can be greatly reduced, and electric power as the easily obtained energy greatly improves its application scene.

[0004] In order to realize the above-mentioned purpose, the utility model provides a lifting and pressing foot structure of a lasting machine, comprising:

[0005] Driving assembly, the driving assembly includes drive motor and the pressing foot cam connected with drive motor;

[0006] Transmission assembly, the transmission assembly includes the jacks, push rod and pressing rod, one end of the jacks is in abutment with the pressing foot cam, the other end of the jacks is connected with the push rod, and the other end away from the jacks of the push rod is provided with the accommodation slot, and the accommodation slot is provided with the tension spring fixing pin, and the both ends of the tension spring fixing pin are fixedly connected with the lasting machine;

[0007] The pressing rod is the hollow tubular structure, one end of the pressing rod is in abutment with the push rod, the other end of the pressing rod is connected with the pressing support, the pressing stretch spring is arranged in the inside of the pressing rod, one end of the pressing stretch spring is fixedly connected with the tension spring fixing pin, the other end of the pressing stretch spring is connected with the tension spring adjusting assembly, and the tension spring adjusting assembly is arranged at the other end away from the tension spring fixing pin in the inside of the pressing rod.

[0008] Further, the side of the pressing foot cam is round and smooth, and two start-stop lines are arranged on the front side of the pressing foot cam. It is convenient to assemble and debug, and the consistency of the lifting and pressing foot height when leaving the factory is ensured.

[0009] Further, the transmission assembly further comprises a cam roller, a top slot is formed at one end of the ejector rod, a threaded fixing pin is fixedly arranged in the top slot, and the cam roller is rotatably arranged on the threaded fixing pin and abuts against the presser foot cam in the top slot.

[0010] Further, a first opening is formed in the displacement slot, and the tension spring fixing pin is fixedly connected with the pressing machine through the first opening. Thus, the movement of the push rod and the tension spring fixing pin does not interfere with each other, and the coordinated operation of the two is ensured.

[0011] Further, the transmission assembly further comprises a press rod guide seat and a press rod guide frame, a press rod guide sliding groove is arranged on the press rod guide seat, a guide sliding block is connected in the press rod guide sliding groove, an installation slot is arranged on the guide sliding block, the press rod guide frame wraps the outer periphery of the pressing rod and is locked, the other end of the press rod guide frame extends to form a connecting portion, and the connecting portion is inserted into the installation slot to realize linkage. The press rod guide seat and the press rod guide frame realize the positioning of the pressing rod, prevent the circumferential rotation of the pressing rod, ensure that the pressing rod can move in a set direction, avoid the offset to cause the failure of the overall operation, and improve the overall operation stability.

[0012] Further, a wrapping ring body for wrapping the pressing rod is arranged on the press rod guide frame, one side of the wrapping ring body is open and extends outward to form a fixing portion, and a locking bolt is arranged on the fixing portion. The wrapping ring body and the fixing portion can be more conveniently installed and disassembled, and the structure is simple.

[0013] Further, the transmission assembly further comprises a pressing rear shaft sleeve, the pressing rear shaft sleeve is sleeved at the connection between the push rod and the pressing rod, and a second opening for penetrating the tension spring fixing pin is arranged on the pressing rear shaft sleeve. The pressing rear shaft sleeve can ensure the stability of the pressing rod and the push rod during operation, and avoid the misplacement of the two to cause the transmission failure and cause the loss of the assembly.

[0014] Further, the tension spring adjusting assembly comprises an adjusting pin and a tension spring adjusting screw, one end of the tension spring adjusting screw is connected with the pressing tension spring, the other end of the tension spring adjusting screw is a threaded connecting end, and the adjusting pin is provided with a connecting inner hole matched with the connecting end. The connecting end and the connecting inner hole are connected to adjust the extension amount of the pressing tension spring, and then control the pressing rod, and the structure is simple and convenient to operate.

[0015] Further, the other end of the adjusting pin away from the connecting inner hole is provided with a clamping portion, and the clamping portion is clamped with the outer wall of the pressing rod after the adjusting pin is inserted into the pressing rod. In this way, the adjusting pin can be installed only by being inserted into the inner tube of the pressing rod, and the structure is simple and practical.

[0016] Further, the pressing rod and the push rod are respectively provided with a first skeleton oil seal and a second skeleton oil seal, and a gap is arranged between the push rod and the top rod. The first skeleton oil seal and the second skeleton oil seal are arranged to ensure the sealing performance of the pressing rod and the push rod, prevent the oil in the machine shell from leaking out, and the reserved gap is adjustable, facilitating assembly and debugging, and ensuring the consistency of the lifting presser foot height when leaving the factory.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The utility model discloses a motor drives the presser foot cam to rotate, and then pushes the movement of the top rod, the push rod and the pressing rod, thereby realizing the forward movement and the backward movement of the pressing support, and the presser foot cam structure reduces the resistance, so that the motor can drive greater resistance.

[0019] 2. The motor is adopted to realize automatic lifting of the presser foot, can greatly reduce the labor intensity of the operator, improves the efficiency and greatly improves the applicable scene as the easy energy.

[0020] 3. The presser foot cam is provided with a marking line, and the gap between the top rod and the push rod is adjustable, facilitating assembly and debugging, and ensuring the consistency of the lifting presser foot height when leaving the factory. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 It is a lifting presser foot structure of a puller of the utility model.

[0023] Figure 2 It is Figure 1 the exploded view.

[0024] Figure 3 It is a cross section schematic view of the utility model after being assembled with the puller.

[0025] Figure 4 It is a structure schematic view of the presser foot cam of the utility model.

[0026] Figure 5 It is a structure schematic view of the top rod of the utility model.

[0027] Figure 6 It is a structure schematic view of the push rod of the utility model.

[0028] Figure 7is an assembly schematic view of the material pressing rear shaft sleeve of the utility model;

[0029] Figure 8 is Figure 2 is an enlarged schematic view of the C area in the figure;

[0030] Figure 9 is Figure 3 is an enlarged schematic view of the D area in the figure;

[0031] Figure 10 is an assembly schematic view of the pressing rod guide seat, pressing rod guide frame, guide sliding block and pressing rod of the utility model.

[0032] In the figure, there are:

[0033] 1, drive assembly; 11, drive motor; 12, presser foot cam; 121, flat end; 122, protruding end; 123, engraved line; 13, motor fixing seat; 2, transmission assembly; 21, jacking rod; 211, jacking slot; 212, threaded fixing pin; 213, first installation slot; 214, locking hole; 22, push rod; 221, plug-in part; 222, accommodation slot; 223, tension spring fixing pin; 224, first opening; 225, second skeleton oil seal; 23, pressing rod; 231, first skeleton oil seal; 232, pressing rod tension spring; 233, tension spring adjusting assembly; 2331, adjusting pin; 23311, connecting inner hole; 23312, clamping top; 2332, tension spring adjusting screw; 23321, first connecting hole; 23322, connecting end; 24, cam roller; 25, material pressing rear shaft sleeve; 251, second opening; 26, pressing rod guide seat; 261, pressing rod guide slot; 27, pressing rod guide frame; 271, wrapping ring body; 272, fixed part; 273, locking bolt; 274, connecting part; 28, guide sliding block; 281, installation slot; 3, lap machine; 4, gap; 5, pressing support. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is one embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as described in the drawings). If the specific posture changes, the directionality indications also change accordingly.

[0036] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0037] Please refer to Figures 1 to 10 , the embodiment of the utility model provides a kind of lifting presser foot structure of pull helper.

[0038] The lifting presser foot structure of pull helper of the embodiment, including drive assembly 1 and transmission assembly 2;

[0039] As Figures 1 to 3 Indicated, the drive assembly 1 in the embodiment includes drive motor 11 and the presser foot cam 12 connected with drive motor 11, the drive motor 11 of the embodiment can adopt step motor, drive motor 11 can be fixed on pull helper 3 by the motor fixed seat 13 provided, as Figure 4 Indicated, the presser foot cam 12 includes flat joint end 121 and protruding end 122, the presser foot cam 12 side of above-mentioned is round smooth surface, two start-stop marking lines 123 are provided on the front side of presser foot cam 12, the first and last ends of the marking line 123 are coincided with the first and last ends of presser foot cam 12, when assembling and debugging, the start-stop position can be determined more quickly, improve the efficiency of assembling and debugging;

[0040] Transmission assembly 2 includes top rod 21, push rod 22 and pressing bar 23, one end of top rod 21 is in abutment with presser foot cam 12, specifically, the transmission assembly 2 in the embodiment further includes cam roller 24, as Figure 5 Indicated, top slot 211 is opened in one end of top rod 21, threaded fixing pin 212 is fixed in top slot 211, cam roller 24 can be rotatably connected by being rotatably arranged on threaded fixing pin 212, and cam roller 24 is in abutment with presser foot cam 12 in top slot 211;

[0041] The other end of top rod 21 is connected with push rod 22, specifically, first installation through slot 213 is provided on the other end of top rod 21 away from top slot 211, locking hole 214 is provided on the top rod 21 and is communicated with first installation through slot 213, as Figure 2 And Figure 6 Indicated, the push rod 22 is provided with insertion part 221 for inserting first installation through slot 213, after insertion part 221 is inserted into the first installation through slot 213, locking hole 214 is locked to insertion part 221 by means of set screw, in particular, after locking, gap 4 is provided between push rod 22 and top rod 21, the size of the gap 4 can be adjusted according to actual situation, facilitate assembly and debugging, ensure the consistency of lifting presser foot height of factory;

[0042] As Figure 6 shown, a let slot 222 is opened at the other end of the push rod 22 away from the top rod 21, a tension spring fixing pin 223 is provided in the let slot 222, the two ends of the tension spring fixing pin 223 are fixedly connected with the pulling machine 3, further, a first opening 224 is opened on the let slot 222, the tension spring fixing pin 223 passes through the first opening 224 and is fixedly connected with the pulling machine 3, so that the tension spring fixing pin 223 does not interfere with the movement of the push rod 22 and the tension spring fixing pin 223 can realize a certain limiting effect on the push rod 22;

[0043] The pressing rod 23 is a hollow tubular structure, one end of the pressing rod 23 abuts against the push rod 22, in order to guarantee the connection stability of the push rod 22 and the pressing rod 23, the embodiment further includes a pressing rear shaft sleeve 25, as Figure 7 shown, a second skeleton oil seal 225 is arranged on the push rod 22, the pressing rear shaft sleeve 25 is sleeved at the connection position of the push rod 22 and the pressing rod 23 and is adjacent to the second skeleton oil seal 225, a second opening 251 for passing through the tension spring fixing pin 223 is arranged on the pressing rear shaft sleeve 25, the second opening 251 overlaps with the first opening 224 for passing through the tension spring fixing pin 223, and the function is the same as that of the first opening 224, which can avoid the interference of the tension spring fixing pin 223 on the pressing rear shaft sleeve 25;

[0044] As Figures 1 to 3 shown, the other end of the pressing rod 23 is connected with a pressing support 5, the outer end of the pressing rod 23 is connected with a first skeleton oil seal 231, the first skeleton oil seal 231 is arranged on the side close to the pressing support 5, a pressing stretching spring 232 is arranged in the inside of the pressing rod 23, one end of the pressing stretching spring 232 is fixedly connected with the tension spring fixing pin 223, the other end of the pressing stretching spring 232 is connected with a tension spring adjusting assembly 233, the tension spring adjusting assembly 233 is arranged in the inside of the pressing rod 23 away from the other end of the tension spring fixing pin 223, specifically, the tension spring adjusting assembly 233 includes an adjusting pin 2331 and a tension spring adjusting screw 2332, one end of the tension spring adjusting screw 2332 is connected with the pressing stretching spring 232, further, as Figure 8 and Figure 9As shown, the first connecting hole 23321 is arranged on the tension spring adjusting screw 2332, and the pressing tension spring 232 is directly buckled on the first connecting hole 23321. The threaded connecting end 23322 is arranged at the other end of the tension spring adjusting screw 2332. The adjusting pin 2331 is provided with a connecting inner hole 23311 matched with the connecting end 23322. When assembled, the threaded connecting end 23322 is directly rotated and connected into the connecting inner hole 23311. The length of the connecting end 23322 can be adjusted to adjust the extension length of the pressing tension spring 232, so as to adjust the tension of the pressing tension spring 232, thereby ensuring that it has sufficient reset force. The other end of the adjusting pin 2331 away from the connecting inner hole 23311 is provided with a clamping top 23312. The adjusting pin 2331 is inserted into the pressing rod 23, and the clamping top 23312 is clamped with the outer wall of the pressing rod 23.

[0045] In order to further ensure that the pressing rod 23 can maintain directional displacement during operation, in the embodiment, as shown in Figure 2 and Figure 10 The pressing rod guide seat 26 and the pressing rod guide frame 27 are further included. The pressing rod guide sliding groove 261 is arranged on the pressing rod guide seat 26. The guide sliding block 28 is connected in the pressing rod guide sliding groove 261. The mounting groove 281 is arranged on the guide sliding block 28. The pressing rod guide frame 27 wraps the outer periphery of the pressing rod 23 and is locked. Specifically, the wrapping ring body 271 for wrapping the pressing rod 23 is arranged on the pressing rod guide frame 27. The wrapping ring body 271 is opened on one side and extends outward to form the fixed part 272. The locking bolt 273 is arranged on the fixed part 272. When assembled, the fixed part 272 is wrapped on the pressing rod 23, and then the locking bolt 273 is inserted to lock the fixed part 272. The connecting part 274 is extended at the other end of the pressing rod guide frame 27. The connecting part 274 is inserted into the mounting groove 281 to realize linkage.

[0046] The working principle of the utility model is as follows: the motor fixing seat 13 is fixedly connected to the pulling machine 3 during assembly. The two ends of the tension spring fixing pin 223 are fixedly connected to the pulling machine 3. The pressing rod 23 and the pressing support 5 are fixed. The second connecting hole is arranged on the pressing support 5. The pressing rod 23 is directly inserted into the second connecting hole and connected with each other through the locking screw and the interference fit. In the initial state of the embodiment, the flat end 121 of the pressing foot cam 12 abuts against the cam roller 24, so that the pressing support 5 is in the operation station. During operation, the driving motor 11 drives the pressing foot cam 12 to rotate. As shown in Figure 1As shown, when the driving motor 11 rotates in the positive direction, the presser cam 12 rotates from left to right, so that the convex end 122 of the presser cam gradually abuts against the cam roller 24, and the cam roller 24 is pushed out in the A direction. In this process, the side edge of the presser cam 12 sequentially transmits force to the jacking rod 21, the push rod 22 and the pressing rod 23 through the cam roller 24, so that the pressing rod 23 moves in the A direction, and then the pressing support 5 moves out of the cooperating pulling machine 3 to perform the work such as material loading, and the like. After the work is completed, the driving motor 11 reverses, so that the presser cam 12 rotates from right to left, and the pressing rod 23 resets in the B direction under the action of the pressing stretching spring 232, and then the pressing rod 23 pushes the push rod 22, and the push rod 22 pushes the jacking rod 21 to reset. Under the continuous action of the pressing stretching spring 232, the cam roller 24 is tightly pressed against the side edge of the presser cam 12, until the flat end 121 of the presser cam 12 rotates to the initial position, and the resetting work is completed. Thus, the reciprocating operation can be completed.

[0047] The preferred embodiments of the utility model are merely used for limiting the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting presser foot structure of a lasting machine, characterized by comprising: The utility model relates to a presser foot cam (12) and a transmission assembly (2) are connected, the transmission assembly (2) includes a top rod (21), a push rod (22) and a pressing rod (23), one end of the top rod (21) is in abutment with the presser foot cam (12), the other end of the top rod (21) is connected with the push rod (22), and a let -by slot (222) is formed in the other end of the push rod (22) away from the top rod (21), a tension spring fixing pin (223) is arranged in the let -by slot (222), and both ends of the tension spring fixing pin (223) are fixedly connected with a pressing machine (3). The pressing rod (23) is a hollow tubular structure, one end of the pressing rod (23) is in abutment with the push rod (22), the other end of the pressing rod (23) is connected with a pressing support (5), a pressing tension spring (232) is arranged in the inside of the pressing rod (23), one end of the pressing tension spring (232) is fixedly connected with the tension spring fixing pin (223), the other end of the pressing tension spring (232) is connected with a tension spring adjusting assembly (233), and the tension spring adjusting assembly (233) is arranged in the inside of the pressing rod (23) away from the other end of the tension spring fixing pin (223). The side of the presser foot cam (12) is a smooth surface, and two start-stop marking lines (123) are arranged on the front side of the presser foot cam (12). The transmission assembly (2) further includes a cam roller (24), a top abutment groove (211) is formed in one end of the top rod (21), a threaded fixing pin (212) is fixedly arranged in the top abutment groove (211), the cam roller (24) is rotatably arranged on the threaded fixing pin (212) and placed in the top abutment groove (211) and in abutment with the presser foot cam (12).

2. The presser foot lifting structure of a lasting machine according to claim 1, wherein A first opening (224) is formed in the let -by slot (222), and the tension spring fixing pin (223) is fixedly connected with the pressing machine (3) through the first opening (224).

3. The presser foot lifting structure of a lasting machine according to claim 1, wherein The transmission assembly (2) further includes a pressing rod guide seat (26) and a pressing rod guide frame (27), a pressing rod guide sliding groove (261) is arranged on the pressing rod guide seat (26), a guide sliding block (28) is connected in the pressing rod guide sliding groove (261), a mounting groove (281) is arranged on the guide sliding block (28), the pressing rod guide frame (27) wraps the outer periphery of the pressing rod (23) and is locked, the other end of the pressing rod guide frame (27) is extended to form a connecting portion (274), the connecting portion (274) is inserted into the mounting groove (281) to realize linkage.

4. The presser foot lifting structure of a lasting machine according to claim 1, wherein A wrapping ring body (271) for wrapping the pressing rod (23) is arranged on the pressing rod guide frame (27), one side of the wrapping ring body (271) is opened and outwardly extended to form a fixing portion (272), and a locking bolt (273) is arranged on the fixing portion (272).

5. The presser foot lifting structure of a lasting machine according to claim 1, wherein ​ 6. The presser foot lifting structure of a lasting machine according to claim 5, wherein ​ 7. The presser foot lifting structure of a lasting machine according to claim 1, wherein The transmission assembly (2) further comprises a rear material pressing bushing (25) sleeved at the joint of the push rod (22) and the material pressing rod (23), and a second opening (251) for passing through the tension spring fixing pin (223) is arranged on the rear material pressing bushing (25).

8. The presser foot lifting structure of a lasting machine according to claim 1, wherein The tension spring adjusting assembly (233) comprises an adjusting pin (2331) and a tension spring adjusting screw (2332), one end of the tension spring adjusting screw (2332) is connected with the material pressing tension spring (232), the other end of the tension spring adjusting screw (2332) is a threaded connecting end (23322), and the adjusting pin (2331) is provided with a connecting inner hole (23311) matched with the connecting end (23322).

9. The presser foot lifting structure of a lasting machine according to claim 8, wherein The other end of the adjusting pin (2331) away from the connecting inner hole (23311) is provided with a clamping top (23312), and the adjusting pin (2331) is inserted into the material pressing rod (23) and the clamping top (23312) is clamped with the outer wall of the material pressing rod (23).

10. The presser foot lifting structure of a lasting machine according to claim 1, wherein The material pressing rod (23) and the push rod (22) are respectively provided with a first skeleton oil seal (231) and a second skeleton oil seal (225), and a gap (4) is arranged between the push rod (22) and the top rod (21).

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