A strapping machine having a coil magazine cover with a wire stop

Abstract

A kind of wire reel warehouse cover is provided with the bundling machine of wire face, including shell, wire feeding mechanism being arranged in shell, wire cutting mechanism, brake mechanism, wire twisting mechanism and wire reel warehouse;Wire reel warehouse includes wire reel slot being arranged in shell and warehouse cover being hinged on wire reel slot, the opposite side of the inside of warehouse cover and wire reel slot is support wire face, support wire face is the concave structure of middle deep, outer shallow, the middle part of support wire face is equipped with the support shaft being cooperated with wire reel, the outer peripheral portion of support shaft forms annular wire face.The utility model has the following advantages compared with prior art: the inside of wire reel warehouse cover is provided with the annular wire face of above-mentioned structure and wire reel relatively, so that when warehouse cover is opened and closed along hinged shaft, annular wire face and wire reel do not interfere, secondly, it can avoid that bundling wire enters the gap between wire reel and annular wire face;Avoid the problem that groove edge on the warehouse cover of prior art and the outer edge of wire reel interfere, or the problem that gap width exceeds the diameter of bundling wire.

Description

Technical Field

[0001] This utility model relates to the field of rebar tying machines, and in particular to a tying machine with a wire-blocking surface on the wire spool cover. Background Technology

[0002] In the construction industry, wire tying machines are commonly used tools to secure steel bars with wire for structural stability. This equipment is crucial for ensuring the stability and safety of building structures. The use of tying machines not only improves construction efficiency but also helps reduce the physical labor intensity of workers when securing steel bars. Existing tying machines typically consist of multiple units, including a feeding unit, a coiling guide unit, a cutting unit, a tying unit, and a wire reel compartment. These units work together to complete multiple steps, including feeding, guiding, coiling, holding, cutting, twisting, and releasing the wire. The feeding unit delivers the wire to the desired position, the coiling guide unit guides the wire to coil around the steel bar, the cutting unit cuts off excess wire, the tying unit twists and secures the wire to the steel bar, and the wire reel compartment stores the wire reels, ensuring an orderly supply.

[0003] To reduce wire consumption, existing binding machines, after feeding the wire onto the rebar and forming a coil, use the reverse rotation of the feed gear to pull the wire downwards by a predetermined amount. This tightens the rebar while simultaneously returning the wire to the wire reel, thus saving wire. However, this design has problems in actual operation. Because the downward-pulled wire can collide or be squeezed against the inner wall of the wire reel, it may enter the gap between the reel and the reel cover. This can cause the wire to get stuck or become congested in the gap, preventing the binding machine from feeding the wire smoothly for the next binding operation.

[0004] For example, patent 202010090234.5 discloses a strapping machine, which discloses that: when the hub portion 410 of the spool 120 is supported by the first support portion 690 on the flange portion 420 side, the second support portion 680 enters the recess 670 on the outer surface of the flange portion 430 of the spool 120, and the flange portion 430 of the hub portion 410 is supported by the second support portion 680, the distance between the approach portion 112a and the outer peripheral surface 430a of the flange portion 430 is less than the diameter of the strapping line W, and the approach portion 112a does not contact the flange portion 430. This structure features a groove on the inner side of the cover that matches the reel. The end of the reel is inserted into the groove to prevent the binding wire from entering the gap between the reel and the cover. However, this structure makes it difficult to control the gap between the reel and the groove. If the gap is too small, the edge of the groove will get stuck with the edge of the reel when the hinged cover is closed. If the gap is too large, there is a risk that the binding wire will enter the gap. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a binding machine with a wire-blocking surface on the wire reel compartment cover.

[0006] The main technical solution of the binding machine with a wire-blocking surface on the wire spool cover provided by this utility model is as follows: it includes a machine housing, a wire feeding mechanism, a wire cutting mechanism, a braking mechanism, a wire twisting mechanism, and a wire spool compartment, all located within the machine housing. The wire spool compartment includes a wire spool groove located within the machine housing and a cover hinged to the wire spool groove. The inner side of the cover opposite to the wire spool groove is a wire-blocking surface, which is a concave structure that is deep in the middle and shallow on the outside. A support shaft that cooperates with the wire spool is located in the middle of the support wire-blocking surface, and an annular wire-blocking surface is formed on the outer periphery of the support shaft. When the cover is fastened to the wire spool groove, a gap is formed between the annular wire-blocking surface and the wire spool. The width of the gap gradually decreases from the middle of the wire spool to the edge, and the gap between the edge of the wire spool and the annular wire-blocking surface is smaller than the diameter of the binding wire.

[0007] The bundling machine with a wire-blocking surface in the wire reel compartment cover provided by this utility model also adopts the following auxiliary technical solutions:

[0008] Preferably, the diameter of the supporting wire-blocking surface is larger than the diameter of the wire spool, and the diameter of the annular wire-blocking surface is larger than the diameter of the wire spool.

[0009] Preferably, the plane containing the outer edge of the annular wire-stopping surface intersects with the radial projection of the wire disc.

[0010] Preferably, the annular wire-stopping surface is a smooth plane.

[0011] Preferably, the outer surface of the bin cover is provided with reinforcing ribs.

[0012] Preferably, the annular wire-blocking surface has a trumpet-shaped structure.

[0013] Preferably, the line connecting the bottom of the support shaft to the outer edge of the annular wire-stopping surface coincides with the upper surface of the annular wire-stopping surface.

[0014] Compared with the prior art, the binding machine with a wire-blocking surface on the spool cover provided by this utility model has the following advantages: The annular wire-blocking surface of the aforementioned structure is provided on the inner side of the spool cover, facing the spool, so that when the cover opens and closes along the hinge axis, the annular wire-blocking surface and the spool will not interfere. Secondly, it can prevent the binding wire from entering the gap between the spool and the annular wire-blocking surface; it avoids the problems of interference between the groove edge on the cover and the outer edge of the spool, or the gap width exceeding the diameter of the binding wire, as in the prior art; the concave structure of the supporting wire-blocking surface, which is deep in the middle and shallow on the outside, facilitates the setting of the supporting shaft, so that after the shaft groove in the middle of the spool is connected to the supporting shaft, the spool can enter the concave surface. The structure avoids contact with the annular wire-blocking surface; especially in binding machines with a wire-pulling function, when the fed-out binding wire is pulled back, the pulled-back binding wire often spreads out radially outside the coil, directly opposite the outer edge of the annular wire-blocking surface. The annular wire-blocking surface has a concave structure that is deep in the middle and shallow on the outside, meaning that the outer edge of the annular wire-blocking surface is inclined around the outer side of the coil. This can gather the spread binding wire towards the axial center of the coil, thus preventing the spread binding wire from approaching the gap between the coil and the annular wire-blocking surface, reducing the possibility of the spread binding wire entering the gap between the coil and the annular wire-blocking surface; and improving the stability of the rebar binding machine during use. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the centerline storage compartment of this utility model.

[0016] Figure 2 This is a cross-sectional view of the centerline storage compartment of this utility model.

[0017] Figure 3 This is a structural diagram of the compartment cover in this utility model.

[0018] Figure 4 This is a cross-sectional view of the compartment cover of this utility model.

[0019] Figure 5 for Figure 2 A magnified view of B in the middle.

[0020] Figure 6 This is a structural diagram of the strapping machine of this utility model. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] See Figures 1 to 6According to the embodiment of the binding machine with a wire-blocking surface on the wire spool cover provided by the utility model, it includes a machine housing, a wire feeding mechanism, a wire cutting mechanism, a braking mechanism, a wire twisting mechanism and a wire spool 1 provided in the machine housing; the wire spool 1 includes a wire spool groove 11 provided in the machine housing and a spool cover 12 hinged to the wire spool groove 11. The inner side of the spool cover 12 opposite to the wire spool groove 11 is a wire-blocking surface. The wire-blocking surface is a concave structure with a deep center and a shallow outer surface. A support shaft 121 that cooperates with the wire spool 2 is provided in the center of the support shaft 121. The outer periphery of the support shaft 121 forms an annular wire-blocking surface 122; when the spool cover 12 is fastened to the wire spool groove 11, a gap is formed between the annular wire-blocking surface 122 and the wire spool 2. The width of the gap gradually decreases from the center of the wire spool 2 to the edge. The gap between the edge of the wire spool 2 and the annular wire-blocking surface 122 is smaller than the diameter of the binding wire. The wire reel compartment 1 contains a wire reel 2, which is rotatably engaged with the support shaft 121. Binding wire is wound around the wire reel 2. The side of the wire reel 2 closest to the wire reel groove 11 is the inner end of the wire reel 2, and the side of the wire reel 2 closest to the compartment cover 12 is the outer end of the wire reel 2. The aforementioned gap refers to the gap between the plane of the outer end of the wire reel 2 and the annular wire-blocking surface 122. The wire reel 2 consists of an integrally formed shaft cylinder and limiting discs located at both ends of the shaft cylinder. A winding cavity is formed between the outer wall of the shaft cylinder and the two limiting discs, and binding wire is wound within the winding cavity. Shaft grooves are provided at both ends of the shaft cylinder, one of which is rotatably engaged with the support shaft 121. The inner side of the cover 12 of the wire reel compartment 1 is provided with an annular wire-blocking surface 122 of the aforementioned structure, which faces the wire reel 2. This ensures that when the cover 12 opens and closes along the hinge axis, the annular wire-blocking surface 122 and the wire reel 2 will not interfere with each other. Secondly, it prevents the binding wire from entering the gap between the wire reel 2 and the annular wire-blocking surface 122. This avoids the problems of interference between the groove edge on the cover 12 and the outer edge of the wire reel 2, or the gap width exceeding the diameter of the binding wire, as seen in the prior art. The concave structure of the supporting wire-blocking surface, which is deep in the middle and shallow on the outside, facilitates the setting of the supporting shaft 121. This allows the wire reel 2 to enter the concave structure without interfering with the annular wire-blocking surface 122 after the shaft groove in the middle of the wire reel 2 aligns with the supporting shaft 121. In particular, with a binding machine that has a binding wire pull-back function, when some of the binding wires that have been fed out are pulled back, the pulled-back binding wires tend to spread out radially outside the coil 2, which is exactly opposite to the outer edge of the annular wire-blocking surface 122. The annular wire-blocking surface 122 has a concave structure that is deep in the middle and shallow on the outside. That is, the outer edge of the annular wire-blocking surface 122 is inclined around the outer side of the coil 2, which can gather the spread binding wires towards the axial center of the coil 2, thereby preventing the spread binding wires from approaching the gap between the coil 2 and the annular wire-blocking surface 122, reducing the possibility of the spread binding wires entering the gap between the coil 2 and the annular wire-blocking surface 122; thus improving the stability of the rebar binding machine during use.

[0023] See Figure 2According to the above-described embodiment of the utility model, the diameter of the supporting wire-blocking surface is larger than the diameter of the wire spool 2, that is, the diameter of the annular wire-blocking surface 122 is larger than the diameter of the wire spool 2. For a binding machine with a wire-pulling function, when some of the wires are pulled back, the pulled-back wires tend to spread out radially beyond the maximum diameter of the limiting disc on the outer side of the wire spool 2, directly opposite the outer periphery of the annular wire-blocking surface 122. The outer periphery refers to the portion of the wire spool 2 outside the axial projection of the annular wire-blocking surface 122. The annular wire-blocking surface 122 has a concave structure that is deep in the middle and shallow on the outside. This means that the outer periphery of the annular wire-blocking surface 122 can gather the spread-out wires towards the axial center of the wire spool 2, thereby preventing the spread-out wires from approaching the gap between the wire spool 2 and the annular wire-blocking surface 122, reducing the possibility of the spread-out wires entering the gap between the wire spool 2 and the annular wire-blocking surface 122, and improving the stability of the rebar binding machine during use.

[0024] See Figures 2 to 4 According to the above-described embodiment of the utility model, the side of the spool 2 near the bottom of the spool groove 11 is the inner end face, and the side near the cover 12 is the outer end face; the gap width between the plane α containing the outer edge of the annular wire-blocking surface 122 and the plane β containing the outer end face of the spool 2 is less than the gap width S1 between the edge of the spool 2 and the annular wire-blocking surface 122. Alternatively, the plane α containing the outer edge of the annular wire-blocking surface 122 intersects with the radial projection of the spool 2. That is, the annular wire-blocking surface 122 is a funnel-shaped inclined surface, which can effectively prevent the binding wire from entering the gap between the spool 2 and the annular wire-blocking surface 122.

[0025] See Figures 2 to 4 According to the above-described embodiment of the utility model, the annular wire-blocking surface 122 is a smooth plane. The smooth annular wire-blocking surface 122 has low friction when in contact with the binding wire, making the guidance of the binding wire smoother.

[0026] See Figure 1 and Figure 6 According to the above-described embodiment of the utility model, a reinforcing rib is provided on the outer side of the bin cover 12. The reinforcing rib on the outer side of the bin cover 12 not only ensures the mechanical strength of the bin cover 12, but also makes it easy to design the inner side of the bin cover 12 as a concave surface that is deep in the middle and shallow on the outside, and the surface of the concave surface is a smooth surface.

[0027] See Figures 2 to 4 According to the above-described embodiments of the utility model, the annular wire-blocking surface 122 has a trumpet-shaped structure.

[0028] See Figures 2 to 4 According to the above-described embodiment of the utility model, the line connecting the bottom of the support shaft 121 to the outer edge of the annular wire-blocking surface 122 coincides with the upper surface of the annular wire-blocking surface 122. This structure simplifies the mold design of the cover 12 and the annular wire-blocking surface 122, facilitates demolding, and provides good wire guiding effect.

[0029] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. The terms "front," "back," "left," "right," "positive," and "negative" in this solution are all terms used to describe things clearly from a certain perspective. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A binding machine with a wire-blocking surface on the wire reel compartment cover, comprising a housing, a wire feeding mechanism, a wire cutting mechanism, a braking mechanism, a wire twisting mechanism, and a wire reel compartment disposed within the housing; the wire reel compartment includes a wire reel groove disposed within the housing and a compartment cover hinged to the wire reel groove, characterized in that: The inner side of the bin cover and the opposite side of the wire reel groove is the wire-blocking surface. The wire-blocking surface has a concave structure that is deep in the middle and shallow on the outside. The middle of the wire-blocking surface is provided with a support shaft that cooperates with the wire reel, and the outer periphery of the support shaft forms an annular wire-blocking surface. When the cover is fastened onto the wire reel groove, a gap is formed between the annular wire-blocking surface and the wire reel. The width of the gap gradually decreases from the center of the wire reel to the edge. The gap between the edge of the wire reel and the annular wire-blocking surface is smaller than the diameter of the binding wire.

2. The bundling machine with a wire-blocking surface in the wire reel compartment cover according to claim 1, characterized in that, The diameter of the support wire-blocking surface is larger than the diameter of the wire spool.

3. The bundling machine with a wire-blocking surface in the wire reel compartment cover according to claim 1, characterized in that, The plane containing the outer edge of the annular wire-stopping surface intersects with the radial projection of the wire disc.

4. The binding machine with a wire-blocking surface in the wire reel compartment cover according to claim 1, characterized in that, The annular wire-stopping surface is a smooth plane.

5. The binding machine with a wire-blocking surface in the wire reel compartment cover according to any one of claims 1-4, characterized in that, The outer side of the bin cover is reinforced with ribs.

6. The binding machine with a wire-blocking surface in the wire reel compartment cover according to any one of claims 1-4, characterized in that, The annular wire-stopping surface has a trumpet-shaped structure.

7. The binding machine with a wire-blocking surface in the wire reel compartment cover according to any one of claims 1-4, characterized in that, The line connecting the bottom of the support shaft to the outer edge of the annular wire-stopping surface coincides with the upper surface of the annular wire-stopping surface.

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