WO2021253718A1

WO2021253718A1 - Conveyor belt feeding mechanism employing pushing

Info

Publication number: WO2021253718A1
Application number: PCT/CN2020/128562
Authority: WO
Inventors: 缪磊; 冯小平; 袁文卿; 肖夕全; 谢献民
Original assignee: 苏州富强科技有限公司
Priority date: 2020-06-15
Filing date: 2020-11-13
Publication date: 2021-12-23
Also published as: CN111924611A; CN111924611B

Abstract

A conveyor belt feeding mechanism employing pushing, comprising: a fixed feeding frame (721), the feeding frame (721) being provided with a conveyor belt guide plate (722), the conveyor belt guide plate (722) being provided with a conveyor belt conveying guide rail (7221) extending linearly; a pushing assembly (723), slidably connected to the feeding frame (721), and located on a side of the conveyor belt guide plate (722); and a pushing drive, having a power output end drivingly connected to the pushing assembly (723). Driven by the pushing drive, the pushing assembly (723) slides back and forth in an extension direction of the conveyor belt conveying guide rail (7221). The feeding mechanism employing pushing solves the following problems prone to occur during discontinuous feeding performed by using a conventional feeding method employing two material plates: inaccurate positioning for feeding, returning of fed material, breaking of a conveyor belt, curving of the conveyor belt, etc., thereby improving feeding efficiency and precision, and thus improving productivity.

Description

Toggle type material belt feeding mechanism

Technical field

The invention relates to the field of non-standard automation, in particular to a toggle type material belt feeding mechanism.

Background technique

In the field of non-standard automation, it is well-known to use different structural forms of feeding mechanism to realize the feeding of the material belt. In the process of researching and realizing the feeding of the belt, the inventor found that the feeding mechanism in the prior art has at least the following problems:

Existing coiled material belts mostly adopt the double-disc feeding system of unwinding-discharging rewinding rewinding. This method of feeding is suitable for continuous and uninterrupted feeding. For intermittent feeding, especially the intermittent time interval In terms of short feeding requirements, double-tray feeding will easily lead to inaccurate feeding positioning, feeding back channeling, material belt tearing, material belt curling, etc. during long-term intermittent feeding, which affects the feeding efficiency. This in turn reduces production efficiency.

In view of this, it is necessary to develop a toggle-type material belt feeding mechanism to solve the above-mentioned problems.

Summary of the invention

In view of the shortcomings in the prior art, the main purpose of the present invention is to provide a toggle-type material belt feeding mechanism, which adopts a toggle-type feeding structure to solve the problem of intermittent feeding in the traditional double-tray type feeding In the process, problems such as inaccurate feeding positioning, feeding back channeling, material belt tearing, and material belt curling are easy to occur, which improves the feeding efficiency and feeding accuracy, and finally improves the production efficiency.

In order to achieve the above-mentioned objects and other advantages according to the present invention, a toggle-type material belt feeding mechanism is provided, which includes:

A fixed feeding frame, the feeding frame is provided with a belt guide plate, and the belt guide plate is provided with a belt conveying guide rail extending in a straight direction;

A toggle assembly, which is slidably connected to the feeding frame and is located beside the strip guide plate; and

Toggle driver, the power output end of which is in transmission connection with the toggle assembly;

Wherein, the toggle assembly is driven by the toggle driver to slide back and forth along the extending direction of the material belt conveying guide rail.

Optionally, the loading rack is provided with a toggle rail, the extension direction of the toggle rail is consistent with the extension direction of the material belt conveying rail, and the toggle assembly is slidably connected to one of the toggle rails. superior.

Optionally, the toggle component includes:

A toggle base, which is slidably connected with the toggle rail;

Toggle vertical board, which is installed on the toggle base;

A toggle plate, which is slidably installed on the toggle vertical plate in a vertical direction and is opposite to the material belt conveying guide rail; and

The plug-in driver, the power output end of which is in transmission connection with the toggle plate;

Wherein, a toggle lever is installed on the toggle plate, and the toggle lever is always located directly above the material belt conveying rail during the reciprocating sliding movement of the toggle base along the toggle rail ; The toggle plate is driven by the plug-in driver to reciprocate up and down in the vertical direction.

Optionally, the strip guide plate is covered with a strip pressure plate, and a non-return assembly is installed on the strip pressure plate, wherein the strip to be loaded is sandwiched between the strip pressure plate and the strip guide plate The non-return assembly includes a non-return base and a non-return lock tongue, the non-return lock tongue can rotate relative to the non-return base to switch between an unlocked state and a locked state; the non-return lock tongue After passing through the material belt pressure plate, it acts on the material belt. When the non-return locking tongue is in the locked state, the non-return locking tongue can prevent the material belt from moving in the opposite direction.

Optionally, a non-returning position component is elastically connected between the non-return base and the non-return locking tongue, and the non-returning position component acts on the non-return locking tongue to lock the non-return locking tongue along a Rotate in the direction to reset from the unlocked state to the locked state.

Optionally, the non-return locking tongue includes a horizontal section and a suspension section, and the suspension section is integrally combined with the horizontal section at the end of the horizontal section and extends downward from the end of the horizontal section.

Optionally, the bottom of the overhanging section is integrally formed with a downwardly protruding non-return portion; the non-return portion has an unlocking surface opposite to the upstream of the strip guide plate and is connected to the strip guide plate The locking surface is opposite to the downstream side; the unlocking surface extends obliquely from the top to the bottom of the inside of the non-return portion, and the locking surface extends in substantially the same direction as the vertical direction, so that The lateral dimension of the non-return portion is gradually shrinking in the direction from top to bottom.

Optionally, the material belt pressure plate is provided with a non-return guide through hole penetrating its upper and lower surfaces, and the non-return locking tongue passes through the material belt pressure plate through the non-return guide through hole, and then acts on all areas below the material belt pressure plate. Describe the material on the tape.

Optionally, the strip pressure plate is provided with a toggle through hole penetrating its upper and lower surfaces, and the toggle rod is driven by the plug-in driver to pass through the toggle through the top of the strip pressure plate. After the holes reach the strip.

One of the above technical solutions has the following advantages or beneficial effects: because it adopts a toggle-type feeding structure, it solves the inaccurate feeding positioning and feeding back that are easy to occur during the intermittent feeding process of the traditional double-disc feeding system. Problems such as channeling, strip tearing, and strip curling improve the feeding efficiency and accuracy, and ultimately improve the production efficiency.

Another technical solution in the above technical solutions has the following advantages or beneficial effects: because it generates linkage with the material belt through a mechanical transmission structure, it completely eliminates the hysteresis problem of the non-return locking tongue locking and unlocking the material belt, so that The toggle-type feeding of the material belt can be carried out smoothly, and at the same time, the manufacturing cost of the equipment is reduced, and it has a more practical application prospect.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings of the embodiments. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limit the present invention. in:

FIG. 1 is a perspective view of a toggle-type tape feeding mechanism proposed according to an embodiment of the present invention, and the arrow S in the figure is the toggle conveying direction of the tape;

Figure 2 is a perspective view of the toggle type strip feeding mechanism proposed according to an embodiment of the present invention with the strip pressing plate and the compression assembly hidden, and the arrow S in the figure is the toggle conveying direction of the strip;

3 is a perspective view of the non-return component of the toggle-type tape feeding mechanism proposed according to an embodiment of the present invention, and the arrow S in the figure is the toggle conveying direction of the tape;

Figure 4 is a front view of the non-return component of the toggle-type tape feeding mechanism proposed according to an embodiment of the present invention;

Figure 5 is a perspective view of the toggle-type material belt feeding mechanism proposed according to an embodiment of the present invention when the non-return component is matched with the material belt, and the arrow S in the figure is the toggle transmission direction of the material belt;

Figure 6 is a cross-sectional view along the F-F direction in Figure 4;

Figure 7 is a perspective view of the internal structure of the non-return component of the toggle-type material belt feeding mechanism proposed according to an embodiment of the present invention, and the figure shows a schematic diagram of the non-return locking tongue and the non-return base;

Figure 8 is a right side view of the non-return locking tongue of the toggle-type material belt feeding mechanism proposed according to an embodiment of the present invention;

Fig. 9 is a front view of the non-return locking tongue of the toggle-type tape feeding mechanism proposed according to an embodiment of the present invention.

detailed description

The following describes the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used in all the drawings to indicate the same or similar parts.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the specification and claims of the patent application of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "a", "one" or "the" do not mean quantity limitation, but mean that there is at least one. "Include" or "include" and other similar words mean that the elements or things before "include" or "include" now cover the elements or things listed after "include" or "include" and their equivalents, and do not exclude other Components or objects. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined relative to the configuration shown in the drawings , In particular, "height" is equivalent to the size from top to bottom, "width" is equivalent to the size from left to right, and "depth" is equivalent to the size from front to back. They are relative concepts, so they may be based on It changes accordingly in different positions and different usage states, so these or other positions should not be interpreted as restrictive terms.

Terms related to attachment, coupling, etc. (for example, "connection" and "attachment") refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through intermediate structures, and the movable or rigid attachment or relationship, unless Other ways are clearly stated.

According to an embodiment of the present invention in conjunction with the illustrations in Figs. 1 and 2, it can be seen that the toggle-type tape feeding mechanism 72 includes:

A fixed feeding frame 721, the feeding frame 721 is provided with a belt guide plate 722, and the belt guide plate 722 is provided with a belt conveying guide rail 7221 extending in a straight direction;

A toggle assembly 723, which is slidably connected to the feeding frame 721 and is located beside the strip guide plate 722; and

Toggle driver (not shown in the figure), the power output end of which is in transmission connection with the toggle assembly 723;

Wherein, the toggle assembly 723 is driven by the toggle driver to reciprocate sliding along the extending direction of the tape conveying guide 7221. According to the above-mentioned features, the toggle-type material belt feeding mechanism 72 adopts a toggle-type feeding structure to solve the problem of inaccurate feeding positioning and feeding that are prone to occur during the intermittent feeding process of the traditional double-disc feeding system. Problems such as back channeling, material belt tearing, and material belt curling have improved the feeding efficiency and feeding accuracy, and finally improved the production efficiency.

As can be seen in the embodiment shown in FIG. 2, the feeding rack 721 is provided with a toggle rail 7211, and the extension direction of the toggle rail 7211 is consistent with the extension direction of the tape conveying rail 7221. The toggle assembly 723 is slidably connected to the toggle rail 7211.

1 and 2 again, the toggle component 723 includes:

Toggle base 7231, which is slidably connected to said toggle rail 7211;

Toggle vertical plate 7232, which is installed on the toggle base 7231;

A toggle plate 7233, which is slidably installed on the toggle vertical plate 7232 in a vertical direction and is opposite to the belt conveying guide rail 7221; and

Plug-in driver 7234, the power output end of which is in transmission connection with the toggle plate 7233;

Wherein, a toggle lever 7235 is installed on the toggle plate 7233, and the toggle lever 7235 is always located in the material belt during the reciprocating sliding movement of the toggle base 7231 along the toggle rail 7211. Directly above the conveying guide rail 7221; the toggle plate 7233 is driven by the plug driver 7234 to reciprocate up and down in the vertical direction.

As can be seen in the embodiment shown in FIG. 3, the material belt 74 includes an auxiliary upper material section 741 extending in a straight direction and a plurality of workpieces 742 to be cut connected to the side of the auxiliary upper material section 741. Wherein, when the material belt 74 is placed on the material belt guide plate 722 for toggle feeding, the extension direction of the auxiliary feeding section 741 is consistent with the toggle direction (the direction indicated by the arrow S in the figure). The material section 741 is provided with a number of transmission through holes 7411 arranged at equal intervals along its extending direction. When the material is toggled and loaded, the toggle lever 7235 will slide downward along with the toggle plate 7233 under the drive of the plug driver 7234, so that The toggle lever 7235 is inserted into a corresponding transmission through hole 7411 directly below it, and then the driver is driven to drive the toggle base 7231 to drive the toggle lever 7235 to toggle a displacement unit along the arrow S direction. The length of the displacement unit is relative to the corresponding one. The distance between two adjacent transmission through holes 7411 is equal.

1 and 3, the strip guide plate 722 is covered with a strip pressure plate 725, the strip pressure plate 725 is installed with a non-return assembly 726, wherein the strip pressure plate 725 and the strip guide plate 722 A material belt 74 to be loaded is sandwiched between; the non-return assembly 726 includes a non-return base 7261 and a non-return lock tongue 7262, and the non-return lock tongue 7262 can rotate relative to the non-return base 7261 to unlock Switch between the state and the locked state; the non-return locking tongue 7262 passes through the strip pressing plate 725 and then acts on the strip. When the non-return locking tongue 7262 is in the locked state, the non-return locking tongue 7262 is in the locked state. The tongue 7262 can prevent the tape from moving in the opposite direction. The non-return assembly 726 described in the above technical solution is linked with the material belt 74 through a mechanical transmission structure, which completely eliminates the hysteresis problem of the non-return locking tongue locking and unlocking the material belt 74, making the material belt The toggle-type feeding can be carried out smoothly, and at the same time, the manufacturing cost of the equipment is reduced, and it has a more practical application prospect.

5 and 6, the non-return base 7261 and the non-return locking tongue 7262 are elastically connected with a non-returning position member 7263, and the non-returning position member 7263 acts on the non-return locking tongue 7262 so that the The non-return locking tongue 7262 rotates in a locking direction to reset from the unlocked state to the locked state. When the toggle lever 7235 moves a displacement unit in the direction of the arrow S, it performs a short pause, and the non-return bolt 7262 acts on one of the remaining transmission through holes 7411 to enable the toggle lever 7235 during the toggle gap. The relative position of the material belt 74 on the material belt guide plate 722 is positioned to prevent the material belt 74 from moving back and causing the transmission through hole 7411 and the toggle lever 7235 to fail to align, which may result in the failure of subsequent shifting and feeding.

It can be seen in the embodiment shown in FIG. 8 that the non-return locking tongue 7262 includes a horizontal section 7262a and a hanging section 7262b, and the hanging section 7262b is integrally combined with the horizontal section at the end of the horizontal section 7262a. 7262a and extends downward from the end of the horizontal section 7262a.

Further, the bottom of the overhanging section 7262b is integrally formed with a downwardly protruding non-return portion 7262d; the non-return portion 7262d has an unlocking surface 7262e opposite to the upstream of the strip guide plate 722 and The locking surface 7262f opposite to the downstream of the strip guide plate 722; the unlocking surface 7262e extends obliquely to the inside of the non-return portion 7262d in a top-to-bottom direction, and the locking surface 7262f extends along and vertically The directions extend in substantially the same direction, so that the lateral dimension of the non-return portion 7262d gradually shrinks from top to bottom. In the embodiment shown in FIG. 6, the non-return base 7261 is rotatably connected to the vicinity of the middle section of the horizontal section 7262a, and the non-return position member 7263 acts on the rotation of the overhanging section 7262b on the horizontal section 7262a. Between the connection points. As can be seen in the embodiment shown in FIGS. 5 and 7, the return stop of the 7262 is achieved by periodically inserting the return stop 7262d into the corresponding transmission through hole 7411 to achieve the effect during the dialing gap of the dialing mechanism. Perform non-return positioning of the material belt 74. Specifically, during the toggle gap of the toggle mechanism, the non-return portion 7262d is inserted into the corresponding transmission through hole 7411 under the action of the elastic restoring force of the non-return position member 7263 and is not received. In addition to its own gravity and the elastic restoring force of the anti-return member 7263, when the anti-return portion 7262d receives the return force from the material belt 74 opposite to the arrow S, the locking surface 7262f is substantially along the vertical direction. Extending in the same direction, this return force cannot drive the non-return locking tongue 7262 to rotate to unlock the strip 74. The strip 74 is firmly locked on the strip guide plate 722, thereby effectively preventing the strip 74 from returning. The phenomenon of channeling; when the material shifting mechanism toggles the material belt 74, the non-return portion 7262d is inserted into the corresponding transmission through hole 7411 under the action of the elastic restoring force of the non-return position member 7263 and is not subject to its own gravity and stop In addition to the elastic restoring force of the restoring member 7263, it is also subjected to the shifting force conducted by the material belt 74 in the direction of the arrow S, because the unlocking surface 7262e obliquely faces the inside of the non-return portion 7262d in the direction from top to bottom. Extend so that when the dial force acts on the unlocking surface 7262e on the non-return portion 7262d through the edge of the transmission through hole 7411, the non-return locking tongue 7262 can be guided by the unlocking surface 7262e around the non-return base 7261 counterclockwise Rotate, so that the non-return portion 7262d is drawn out from the corresponding transmission through hole 7411, that is, the non-return locking tongue 7262 can be switched from the locked state to the unlocked state under the driving of the dial force, so as not to interfere with the dial mechanism. The flicking of the material causes obstruction or interference.

8, a positioning inclined surface 7262c is formed on one side of the overhanging section 7262b, and the positioning inclined surface 7262c extends obliquely toward the inside of the overhanging section 7262b in a top-to-bottom direction so that the lateral direction of the overhanging section 7262b is The size is gradually shrinking from top to bottom. The positioning slope 7262c can guide the rotation direction of the non-return locking tongue 7262 when the non-return locking tongue 7262 is reset from the unlocked state to the locked state, so that the rotation process of the non-return locking tongue 7262 is more stable. In addition, when the non-return locking tongue 7262 is When rotated to the locked state, the positioning inclined surface 7262c can position the non-return locking tongue 7262, so that the non-return portion 7262d can be accurately aligned with the corresponding transmission through hole 7411.

3 and 6, the strip pressure plate 725 is provided with a non-return guide through hole 7251 that penetrates its upper and lower surfaces, and the non-return lock tongue 7262 passes through the strip pressure plate 725 through the non-return guide through hole 7251 and then Act on the strip 74 below the strip pressing plate 725.

It can be seen from the embodiment shown in FIG. 6 that the non-return guiding through hole 7251 is formed with a guiding inclined surface 7251a adapted to the positioning inclined surface 7262c. Through the cooperation of the guiding inclined surface 7251a and the positioning inclined surface 7262c, the positioning inclined surface 7262c guides the rotation of the non-return locking tongue 7262 more stably, and at the same time improves the positioning accuracy of the non-return locking tongue 726.

Furthermore, the strip guide plate 722 is provided with a strip conveying guide rail 7221 extending in a straight direction. The material belt 74 is arranged in the material belt conveying guide rail 7221 and is clamped by the material belt guide plate 722 and the material belt pressing plate 725.

As can be seen in the embodiment shown in FIGS. 3 and 4, a waste guide plate 75 is connected downstream of the strip guide plate 722. The waste guide plate 75 is covered with a waste pressing plate 752. The waste guide plate 75 is provided with a straight line. The waste conveying guide 751 extending in the linear direction, and the cut auxiliary loading section 741 is guided to the waste conveying guide 751 for export.

2 again, the strip pressing plate 725 is provided with a toggle through hole 7252 that penetrates its upper and lower surfaces. The toggle lever 7235 is driven by the plug-in driver 7234 to pass through the strip pressing plate 725. After passing through the toggle through hole 7252, it reaches the material belt.

Referring again to FIG. 1, the feeding frame 721 is provided with a pressing assembly 724 that is selectively pressed on the belt pressing plate 725. The pressing component 724 can apply pre-pressure through the belt pressing plate 725 to prevent the belt pressing plate 725 from moving from the belt guide plate 722 due to the traction force applied to the belt pressing plate 725 by the belt 74 during the pulling and feeding process of the belt 74 Slipped up and down.

The number of equipment and processing scale described here are used to simplify the description of the present invention. Applications, modifications and changes to the present invention are obvious to those skilled in the art.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Other modifications are implemented, so without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the legends shown and described here.

Claims

A toggle type material belt feeding mechanism, which is characterized in that it comprises:

A fixed feeding frame (721), the feeding frame (721) is provided with a strip guide plate (722), and the strip guide plate (722) is provided with a strip conveyor extending in a straight direction Guide rail (7221);

A toggle assembly (723), which is slidably connected to the feeding frame (721) and is located beside the strip guide plate (722); and

Toggle driver, the power output end of which is in transmission connection with the toggle assembly (723);

Wherein, the toggle assembly (723) is driven by the toggle driver to slide back and forth along the extension direction of the material belt conveying guide rail (7221).
The toggle-type tape feeding mechanism according to claim 1, wherein the feeding frame (721) is provided with a toggle rail (7211), and the extension direction of the toggle rail (7211) is the same as The extending directions of the strip conveying guide rails (7221) are consistent, and the toggle assembly (723) is slidably connected to the toggle guide rails (7211).
The toggle-type tape feeding mechanism according to claim 2, wherein the toggle assembly (723) comprises:

A toggle base (7231), which is slidably connected with the toggle guide rail (7211);

Toggle vertical plate (7232), which is installed on the toggle base (7231);

A toggle plate (7233), which is slidably installed on the toggle vertical plate (7232) in a vertical direction and is opposite to the belt conveying guide rail (7221); and

Plug-in driver (7234), the power output end of which is in transmission connection with the toggle plate (7233);

Wherein, a toggle lever (7235) is installed on the toggle plate (7233), and the toggle lever (7235) slides back and forth along the toggle rail (7211) along with the toggle base (7231) During the moving process, it is always located directly above the material belt conveying guide rail (7221); the toggle plate (7233) is driven by the plug drive (7234) to reciprocate up and down in the vertical direction.
The toggle type strip feeding mechanism according to claim 1, wherein the strip guide plate (722) is covered with a strip pressure plate (725), and the strip pressure plate (725) is installed with a stopper. The return component (726), wherein the strip to be loaded is sandwiched between the strip pressing plate (725) and the strip guide plate (722); the non-return component (726) includes a non-return base (7261) ) And a non-return locking tongue (7262), the non-return locking tongue (7262) can rotate relative to the non-return base (7261) to switch between an unlocked state and a locked state; the non-return locking tongue ( 7262) After passing through the material belt pressure plate (725), it acts on the material belt. When the non-return locking tongue (7262) is in the locked state, the non-return locking tongue (7262) can prevent the material With reverse movement.
The toggle-type tape feeding mechanism according to claim 4, characterized in that, a non-return position member (7263) is elastically connected between the non-return base (7261) and the non-return lock tongue (7262), The non-returning position component (7263) acts on the non-return locking tongue (7262) to make the non-return locking tongue (7262) rotate in a locking direction to reset from the unlocked state to the locked state.
The toggle type tape feeding mechanism according to claim 4, wherein the non-return locking tongue (7262) includes a horizontal section (7262a) and a hanging section (7262b), and the hanging section (7262b) is in The end of the horizontal section (7262a) is integrated with the horizontal section (7262a) and extends downward from the end of the horizontal section (7262a).
The toggle-type tape feeding mechanism according to claim 6, wherein the bottom of the suspension section (7262b) is integrally formed with a downwardly protruding non-return portion (7262d); the non-return portion (7262d); (7262d) has an unlocking surface (7262e) opposite to the upstream of the strip guide plate (722) and a locking surface (7262f) opposite to the downstream of the strip guide plate (722); the unlocking surface ( 7262e) extends obliquely to the inside of the non-return portion (7262d) in a top-to-bottom direction, and the locking surface (7262f) extends in substantially the same direction as the vertical direction, so that the non-return The lateral dimension of the part (7262d) is gradually shrinking from top to bottom.
The toggle type material belt feeding mechanism according to claim 6, characterized in that the material belt pressure plate (725) is provided with a non-return guide through hole (7251) penetrating the upper and lower surfaces of the material belt pressure plate (725), and the non-return lock tongue (7262) through the non-return guide through-hole (7251) through the material belt pressing plate (725) and then acting on the material belt below the material belt pressing plate (725).
The toggle type material belt feeding mechanism according to claim 4, characterized in that the material belt pressure plate (725) is provided with a toggle through hole (7252) penetrating the upper and lower surfaces of the material belt pressure plate (725), and the toggle lever (7235) ) Driven by the plug-in driver (7234), pass through the toggle through hole (7252) from above the strip pressing plate (725) to reach the strip.
The toggle type material belt feeding mechanism according to claim 4, wherein the feeding frame (721) is provided with a pressing assembly (724) selectively pressed on the belt pressing plate (725). ).