CN103898680B - Carpet Embroidery Machine Dynamic Thread Adjustment Mechanism - Google Patents

Abstract

The invention discloses a kind of carpet to embroider motor-driven state yarn change mechanism, comprise base and install wherein with wire guide plate at least one cable-through hole, the photoelectric sensor switch corresponding with each cable-through hole position and trigger crank, be serially connected in fixed axis in the middle part of all triggering cranks in addition and respective spinning the torsion spring triggering crank up and reset, the photoelectric sensor switch built-in beam that base comprises left side plate symmetrical mutually and is connected between this left side plate, fixed axis is also connected between this left side plate, trigger crank lower end and there is hook string holes, upper end has shading head, torn by hook string holes when embroidering line and being tightened up and trigger crank and overcome torsion spring resistance and rotate around fixed axis, shading head is made to move to the shading light electric induction position of the switch, trigger the line sending of corresponding line sending electric motor starting, after embroidery line is relaxed, trigger crank to automatically reset under the effect of torsion spring, the present invention has when embroidering line and being tightened up, and line sending motor just drives the dynamically line sending in good time of line sending clip wheel group, avoids embroidering the uncontrolled beneficial effect of line.

Description

Carpet Embroidery Machine Dynamic Thread Adjustment Mechanism

technical field

The invention relates to a thread adjusting mechanism applied to a carpet embroidery machine to adjust embroidery thread tightness and assist thread feeding, in particular to a dynamic thread adjusting mechanism of a carpet embroidery machine.

Background technique

In the prior art, when the carpet embroidery machine is embroidering the thread fluff of the carpet, the embroidery needle directly passes through the embroidery thread to sew the embroidery thread on the carpet base material to form the thread fluff. Apply pressure, and at the same time, the rust frame moves to extend the embroidery pattern. These activities make the embroidery thread continuously delivered for embroidery. In the prior art, the frequency of embroidery thread delivery is controlled according to the frequency of embroidery needle pressing down to the embroidery thread The wire feeding motor feeds the wire, and its wire feeding mechanism mainly includes the wire feeding motor installed on the coloring wire feeding frame, the wire feeding clamp wheel set and the upper guide plate connected with it, and the position close to the embroidery needle, which is installed on the needle bar There is a lower guide plate with a thread hole on the frame of the mechanism. The embroidery thread is guided into the thread guide hole of the upper guide plate and the lower guide plate through the thread feeding clamp wheel group, and then led to the embroidery needle. When the embroidery needle is pressed down and passes through the embroidery When the thread is sewing, the thread feeding motor drives the thread feeding clamp wheel group to feed the thread in time. When the embroidery pattern is extended, it depends on the thread feeding margin to meet the required embroidery thread length. But when the embroidery frame stays in place, the embroidery needle When the thread-feeding needle repeats sewing at the same position, the thread-feeding motor will continue to drive the thread-feeding clamp wheel to feed the thread. In this case, there is no amount of thread under the embroidery needle, but the thread is fed continuously, which will accumulate and cause excessive embroidery thread If it is not controlled, the embroidery thread before the embroidery needle is too loose, which will cause the embroidery thread to shift, resulting in the quality of embroidery. How to solve this thread adjustment problem is a technical problem that is currently being solved in the carpet embroidery machine industry.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dynamic thread adjustment mechanism for a carpet embroidery machine that only when the embroidery thread is stretched, the thread feeding motor drives the thread feeding pinch wheel group to dynamically feed the thread in a timely manner to avoid uncontrolled embroidery thread.

In order to solve the above-mentioned technical problems, the technical scheme of the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention is: comprising a base and installing a middle guide plate with at least one thread passing hole therein, and installing it under the middle guide plate, and connecting with each thread passing The photoelectric sensor switch and the trigger crank corresponding to the position of the hole, as well as the fixed shafts connected in series in the middle of all the trigger cranks and the torsion springs that respectively spin the trigger cranks to rotate and reset, the base includes mutually symmetrical left and right side plates and connected to the The photoelectric sensor switch between the left and right side plates fixes the beam, and the fixed shaft is also connected between the left and right side plates. The lower end of the trigger crank has a thread hook hole, and the upper end has a shading head, which passes through when the embroidery thread is tightened. Pull the hook thread hole to trigger the crank to overcome the resistance of the torsion spring and rotate around the fixed axis, so that the shading head moves to the position of blocking the photoelectric sensor switch, and triggers the corresponding thread feeding motor to start thread feeding. After the embroidery thread is loosened, the trigger crank acts on the torsion spring. Automatic reset.

As one of the preferred technical solutions of the present invention, the trigger crank includes a hollow shaft with a flange, a dial arm with a hook hole at one end, and a swing arm with a shading head at one end, and the other end of the dial arm It has a clamping head and a torsion spring slot, and the other end of the swing arm has a connecting flange, wherein the connecting flange and the flange are connected by bolts, and the clamping head is sleeved on the other end of the hollow shaft and tightened The screw is locked, and a crank is formed between the toggle arm and the swing arm with the center of the hollow shaft as the center of deflection. The hollow shaft is sleeved on the fixed shaft. The middle part of the torsion spring is installed in the torsion spring slot, and one end is fixed On the dial arm, the other end is fixed by a positioning beam connected between the left and right side plates of the base.

As the second preferred technical solution of the present invention, a section of hollow rotating shaft is extended at the end of the connection between the flange and the connecting flange, and the connecting flange is sleeved on this section of hollow rotating shaft and then connected to the flange through bolts. connect.

A further improvement to the preferred technical solution of the present invention is: a limiting member is provided above the photoelectric sensor switch to limit the movement of the shading head that triggers the crank to the position where the photoelectric sensor switch is blocked.

The beneficial effects of the present invention are: the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention is installed above the lower guide plate and fixed on the frame of the needle bar mechanism, and the embroidery thread is guided into the upper guide plate and the middle guide plate through the thread feeding clamp wheel group. The thread hole is introduced into the hook thread hole at the lower end of the trigger crank and then led to the embroidery needle through the thread hole of the lower guide plate. When the embroidery needle is pressed down through the embroidery thread to sew or the embroidery frame moves, the embroidery thread is tightened. At this time, the embroidery thread pulls the trigger crank through the hook thread hole of the trigger crank to overcome the resistance of the torsion spring and rotate around the fixed axis, so that the light-shielding head of the trigger crank moves to the position of blocking the photoelectric sensor switch, and triggers the corresponding wire-feeding motor to drive the wire-feeding clamp wheel set Feed the thread at the right time, after the embroidery thread is loosened, the trigger crank automatically resets under the action of the torsion spring, and the thread feeding motor drives to stop the thread feeding, that is to say, the thread is sent only when the embroidery thread is stretched to a certain degree, when the embroidery frame is in place Fixed position, when the embroidery needle repeats sewing at the same position, the thread-feeding motor will not drive the thread-feeding clamp wheel to feed the thread, and if there is no amount of thread under the embroidery needle, the thread will not be fed, so that the embroidery thread is under dynamic control , keep the tension set for the embroidery thread, and ensure that the embroidery thread before the embroidery needle does not shift, thereby ensuring the embroidery quality; so the present invention has the feature that the thread feeding motor drives the thread feeding clamp wheel only when the embroidery thread is tensioned. The group dynamically feeds the thread in a timely manner to avoid the beneficial effect of uncontrolled embroidery thread.

Description of drawings

The dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Fig. 1 is a three-dimensional structure diagram of a thread feeding and adjusting mechanism of a carpet embroidery machine in the prior art.

Fig. 2 is a front view of the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention.

FIG. 3 is a rear view of FIG. 2 .

Fig. 4 is a left side view of Fig. 2 .

Fig. 5 is a right side view of Fig. 2 .

FIG. 6 is a top view of FIG. 2 .

FIG. 7 is a bottom view of FIG. 2 .

FIG. 8 is a perspective view of FIG. 2 .

Fig. 9 is a front view after removing the side plate of the base in Fig. 4 .

Fig. 10 is a front view of the wire plate in Fig. 2 with the front part removed.

FIG. 11 is a perspective view of FIG. 10 .

Fig. 12 is a front view of the trigger crank in the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention.

Fig. 13 is a longitudinal sectional view of the trigger crank in the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention.

Fig. 14 is a right side view of Fig. 12 .

FIG. 15 is a top view of FIG. 12 .

FIG. 16 is a bottom view of FIG. 12 .

FIG. 17 is a perspective view of FIG. 12 .

FIG. 18 is a partial enlarged view of A in FIG. 13 .

Fig. 19 is a front view of the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention installed on the frame of the needle bar mechanism.

Fig. 20 is a left side view of Fig. 19 .

FIG. 21 is a perspective view of FIG. 19 .

Fig. 22 is a perspective view of the cooperation relationship between the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention installed on the frame of the needle bar mechanism and the thread feeding mechanism.

detailed description

As shown in FIG. 1 , the prior art carpet embroidery machine wire feeding and adjusting mechanism includes a wire feeding motor 70 installed on a toning wire feeding frame 80 and a wire feeding pinch wheel set 30 and an upper guide plate 40 connected thereto. , also near the embroidery needle 50 position, installed on the needle bar mechanism frame 20 with the lower guide plate 10 with the thread hole 2, the embroidery thread 60 is introduced into the upper guide plate 40 and the lower guide plate 10 through the thread feeding clamp wheel set 30 The thread passing hole 2 is then led to the embroidery needle 50. When the embroidery needle 50 presses down and passes through the embroidery thread 60 to sew, the thread feeding motor 70 drives the thread feeding clamp wheel group 30 to feed the thread in good time. When the embroidery pattern is extended, it is Rely on the thread feeding margin to meet the required embroidery thread length, but when the embroidery frame stays in place and 50 embroidery needles and 60 embroidery threads are repeatedly sewed at the same position, the thread feeding motor 70 will continue to drive the thread feeding The clamp wheel group 30 feeds the thread. In this case, there is no amount of thread under the embroidery needle, but if the thread is fed continuously, it will accumulate and cause too much embroidery thread to be uncontrolled, so that the embroidery thread before the embroidery needle is too loose, causing the embroidery thread to deviate. Cause embroidery quality problems.

As shown in Figures 2 to 22, the embodiment of the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention is: it includes a base 1 and a middle guide plate 3 with at least one thread hole 2 installed therein, and the middle guide plate 3 is installed on the base 1. Below, the photoelectric sensor switch 4 and the trigger crank 5 corresponding to the position of each wire hole 2, and the fixed shaft 6 connected in series in the middle of all the trigger cranks 5 and the torsion springs 7 that respectively rotate and press the trigger crank 5 to reset, The base 1 includes mutually symmetrical left and right side plates 11 and a photoelectric sensor switch fixed beam 12 connected between the left and right side plates, the fixed shaft 6 is also connected between the left and right side plates, and the lower end of the trigger crank 5 It has a thread hook hole 51 and a shading head 52 on the upper end. When the embroidery thread is tightened, pull the trigger crank 5 through the thread hook hole 51 to overcome the resistance of the torsion spring 7 and rotate around the fixed shaft 6, so that the shading head 52 moves to block the photoelectric sensor switch. 4 position, trigger the corresponding wire-feeding motor to start the wire-feeding, and after the embroidery thread is loosened, the trigger crank 5 automatically resets under the action of the torsion spring 7. In this embodiment, the middle guide plate 3 is fixed on the left and right side plates 11, the number of the thread passing hole 2, the photoelectric sensor switch 4, and the trigger crank 5 are related to the thread feeding motor 70 on the carpet embroidery machine and the thread feeding clip wheel group connected thereto. The number of 30 is the same, wherein multiple photoelectric sensor switches 4 can be installed side by side in the same circuit board, and are installed together on the photoelectric sensor switch fixed beam 12, and the bending angle of the trigger crank 5 can be designed as an adjustable structure, so that it can be used according to different Thread feeding is required to adjust the rotation angle and triggering time of the trigger crank 5 triggering the photoelectric sensor switch 4, so as to meet the requirement of timely and dynamic adjustment of embroidery thread tightness and timely thread feeding.

As shown in Figures 12 to 18, as one of the preferred embodiments of the present invention, the trigger crank 5 includes a hollow shaft 54 with a flange 53 and a toggle arm 55 with a hook hole 51 at one end, and A swing arm 56 with a shading head 52, the other end of the toggle arm 55 has a clamping head 57 and a torsion spring slot 58, and the other end of the swing arm 56 has a connecting flange 59, wherein the connecting flange 59 is connected to the The blue plate 53 is connected by bolts, the clamping head 57 is sleeved on the other end of the hollow shaft 54 and locked with a set screw, and a crank is formed between the toggle arm 55 and the swing arm 56 with the center of the hollow shaft 54 as the center of deflection. , the hollow rotating shaft 54 is sleeved on the fixed shaft 6, the middle part of the torsion spring 7 is installed in the torsion spring slot 58, one end of which is fixed on the toggle arm 55, and the other end is connected to the left and right side plates of the base 1 by a The positioning crossbeam 8 between 11 is fixed. In this embodiment, the bending angle of the trigger crank 5 is designed as an adjustable structure. The swing arm 56 has an end connected to the flange 59, which is used as the bending angle of the trigger crank 5 after being connected with the flange 53 of the hollow rotating shaft 54 by bolts. As a reference, when installing the toggle arm 55, its clamping head 57 is sleeved on the other end of the hollow shaft 54, and the deflection adjusts the bending angle of the trigger crank 5 and then locks it with a set screw. This adjustment can be operated at any time according to actual use requirements , the positioning beam 8 is designed as a cylindrical beam, and each torsion spring 7 and the fixed end of the positioning beam 8 are fixed on the cylindrical beam by a ring, and the spring jack is designed on the toggle arm 55, and each torsion spring 7 The other end is inserted into the spring jack on the respective toggle arm 55, this design is easy to install and self-adaptive to the position.

As shown in Figures 13 and 18, as the second preferred embodiment of the present invention, a section of hollow shaft 54 extends from the end where the flange 53 is connected to the connecting flange 59, and the connecting flange 59 is sleeved on the This section of the hollow rotating shaft 54 is connected with the flange 53 by bolts. In this embodiment, a section of hollow rotating shaft 54 is extended, and the connecting flange 59 is sleeved on this section of hollow rotating shaft 54, so that it is easier to ensure that the rotational axis of the swing arm 56 and the dial arm 55 are concentric, and at the same time, it can also be connected through the sleeve. The shading head 52 of each swing arm 56 can be accurately aligned with the sensing groove of the photoelectric sensor switch 4 by connecting the washer.

As shown in Figures 9-10, a further improvement to the preferred embodiment of the present invention is: a limiter 9 is provided above the photoelectric sensor switch 4 to limit the movement of the shading head 52 that triggers the crank 5 to block the position of the photoelectric sensor switch 4 . In this embodiment, the limiter 9 is a cylinder installed between the left and right side plates 11, which can prevent the trigger crank 5 from causing the shading head 52 to surpass the position of the photoelectric sensor switch 4 due to the inertia of the too fast rotation of the trigger crank 5, and can reduce the trigger crank 5 and Torsion spring 7 coordinates the difficulty of adjustment.

As shown in Figures 19-22, the dynamic thread adjustment mechanism of the carpet embroidery machine of the present invention is installed above the lower guide plate 10 and fixed on the frame 20 of the needle bar mechanism, and the embroidery thread 60 is guided into the upper guide plate through the thread feeding clamp wheel group 30 40. The thread passing hole 2 of the middle guide plate 3 is introduced into the hook thread hole 51 at the lower end of the trigger crank 5 and then led to the embroidery needle 50 through the thread passing hole 2 of the lower guide plate 10, when the embroidery needle 50 is pressed down and passed through the embroidery thread 60 When sewing or moving the embroidery frame, the embroidery thread 60 is tightened. At this time, the embroidery thread 60 pulls the trigger crank 5 through the hook thread hole 51 of the trigger crank 5 to overcome the resistance of the torsion spring 7 and rotate around the fixed shaft 6, so that the trigger crank 5 The shading head 52 moves to the position of blocking the photoelectric sensor switch 4, and triggers the corresponding wire-feeding motor 70 to drive the wire-feeding clamp wheel set 30 to feed the wire in good time. After the embroidery thread 60 is loosened, the trigger crank 5 automatically resets under the action of the torsion spring 7 , the wire feeding motor 70 drives to stop the wire feeding, that is, the embroidery thread 60 is stretched to a certain extent before feeding the thread, when the embroidery frame stays in place, the embroidery needles 50 pairs of embroidery threads 60 needles repeatedly sew at the same position When making, the thread feeding motor 70 will not drive the thread feeding pinch wheel set 30 to feed the thread, and if there is no amount of thread used for 50 embroidery needles, the thread will not be sent, so that the embroidery thread 60 is dynamically controlled to maintain the set tension of the embroidery thread 60, Ensure that the embroidery thread before the embroidery needle does not deviate, thereby ensuring the embroidery quality; so the present invention has the feature that when the embroidery thread is tightened, the thread-feeding motor drives the thread-feeding clamp wheel group to dynamically feed the thread in a timely manner, so as to avoid the embroidery thread from being unsteady. Controlled beneficial effects.

The above descriptions are only preferred embodiments of the present invention, and they do not constitute a limitation to the protection scope of the present invention. As long as the purpose of the present invention is realized by basically the same means, all should belong to the protection scope of the present invention.

Claims (4)

1. a carpet is embroidered motor-driven state yarn change mechanism, it is characterized in that: comprise base (1) and install wherein with the middle wire guide plate (3) of at least one cable-through hole (2), and be arranged on wire guide plate in this (3) below, the photoelectric sensor switch (4) corresponding with each cable-through hole (2) position and trigger crank (5), the fixed axis (6) and the respective spinning that are serially connected in all triggering cranks (5) middle part in addition the torsion spring (7) that triggering crank (5) turns round reset, the photoelectric sensor switch built-in beam (12) that described base (1) comprises left side plate (11) symmetrical mutually and is connected between this left side plate, described fixed axis (6) is also connected between this left side plate, described triggering crank (5) lower end has hook string holes (51), upper end has shading head (52), torn by hook string holes (51) when embroidering line and being tightened up and trigger crank (5) and overcome torsion spring (7) resistance and rotate around fixed axis (6), shading head (52) is moved to and blocks photoelectric sensor switch (4) position, trigger the line sending of corresponding line sending electric motor starting, after embroidery line is relaxed, trigger crank (5) to automatically reset under the effect of torsion spring (7).

2. carpet according to claim 1 is embroidered motor-driven state yarn change mechanism, it is characterized in that: described triggering crank (5) comprises the wiper arm (55) that the hollow rotating shaft (54) with ring flange (53) and an end have hook string holes (51), and one end there is the spiral arm (56) of shading head (52), described wiper arm (55) other end has clamping head (57) and torsion spring draw-in groove (58), the other end of described spiral arm (56) has adpting flange (59), wherein this adpting flange (59) and ring flange (53) pass through bolt-connection, described clamping head (57) is socketed in the other end of hollow rotating shaft (54) and locks with holding screw, and to allow between wiper arm (55) and spiral arm (56) with hollow rotating shaft (54) axle center be that deflection center forms crank, described hollow rotating shaft (54) is socketed on fixed axis (6), described torsion spring (7) middle part is arranged in torsion spring draw-in groove (58), wherein one end is fixed in wiper arm (55), the other end is fixed by the location crossbeam (8) that is connected between base (1) left side plate (11).

3. carpet according to claim 2 is embroidered motor-driven state yarn change mechanism, it is characterized in that: be extended with one section of hollow rotating shaft (54) in the end that described ring flange (53) connects with adpting flange (59), adpting flange (59) is socketed on this section of hollow rotating shaft (54) to pass through bolt-connection with ring flange (53) again.

4. carpet according to claim 1 and 2 is embroidered motor-driven state yarn change mechanism, it is characterized in that: be also provided with locating part (9) in the top of photoelectric sensor switch (4), till the shading head (52) limiting triggering crank (5) moves to and blocks photoelectric sensor switch (4) position.