A strapping machine having a coil magazine cover with an annular wire retaining groove

Abstract

A kind of wire reel warehouse cover is provided with annular wire blocking groove's binding machine, including machine shell, the wire feeding mechanism being arranged in machine shell, wire cutting mechanism, brake mechanism, torsion wire mechanism and wire reel warehouse;Wire reel warehouse includes wire reel slot being arranged in machine shell and the warehouse cover being hinged on wire reel slot, wire reel is installed in wire reel warehouse, and binding wire is wound on wire reel, the middle part of the inner side of warehouse cover is provided with the support shaft being cooperated with wire reel, the opposite surface of the inner side of warehouse cover and wire reel slot is provided with annular groove, annular wire blocking convex is arranged on the outer end surface of wire reel, annular wire blocking convex is inserted into annular groove, and gap is formed between annular wire blocking convex and annular groove.The utility model has the following advantages compared with prior art: annular wire blocking convex is arranged on wire reel, and annular groove is arranged on the inner side of warehouse cover and cooperated with annular wire blocking convex, so that binding wire can be prevented from entering the gap between wire reel and warehouse cover, and the setting of annular groove forms annular convex on the outer side of warehouse cover, which helps to improve the strength of warehouse cover.

Description

Technical Field

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

[0002] In the construction industry, wire tying machines are commonly used tools to secure steel bars with wire to fix the structure. This equipment is crucial for ensuring the stability and safety of building structures. The use of wire tying machines not only improves construction efficiency but also helps reduce the physical labor intensity of workers when fixing steel bars.

[0003] Existing bundling machines typically consist of multiple units, including a feeding unit, a coiling guide unit, a cutting unit, a bundling unit, and a receiving unit. These units work together to complete multiple steps such as feeding, guiding, coiling, holding, cutting, twisting, and releasing the wire. The feeding unit is responsible for delivering the wire to the required position, the coiling guide unit guides the wire to coil around the rebar, the cutting unit cuts off excess wire, the bundling unit twists and secures the wire to the rebar, and the receiving unit stores the wire to ensure its orderly supply.

[0004] 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 practical operation. Because the downward-pulled wire can collide with or compress the inner wall of the wire reel, it may enter the gap between the reel and the reel cover, potentially causing the wire to become stuck or jammed in this gap.

[0005] 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

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a strapping machine with an annular wire-stopping groove in the wire reel compartment cover.

[0007] The main technical solution of the binding machine with an annular wire-blocking groove in the wire spool compartment 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 within the machine housing. The wire spool compartment includes a wire spool groove within the machine housing and a compartment cover hinged to the wire spool groove. A wire spool is installed inside the wire spool compartment, and binding wire is wound on the wire spool. A support shaft cooperating with the wire spool is provided in the middle of the inner side of the compartment cover. An annular groove is provided on the inner side of the compartment cover opposite to the wire spool groove. An annular wire-blocking protrusion is provided on the outer end face of the wire spool. The annular wire-blocking protrusion is inserted into the annular groove, and a gap is formed between the annular wire-blocking protrusion and the annular groove. The annular groove includes an annular bottom wall, an annular inner side wall and an annular outer side wall on both sides of the annular bottom wall. The annular wire-blocking protrusion includes an annular top surface opposite to the annular bottom wall, an annular inner side surface opposite to the annular inner side wall, and an annular outer side surface opposite to the annular outer side wall. The gap between the annular outer side wall and the annular outer side surface is smaller than the diameter of the binding wire.

[0008] The bundling machine with an annular wire-stopping groove in the wire reel cover provided by this utility model also adopts the following auxiliary technical solutions:

[0009] Preferably, the side of the wire reel opposite to the bin cover is the outer end face of the wire reel, and a reinforcing rib is provided on the outer end face of the wire reel, with the height of the annular wire-stopping protrusion being greater than the height of the reinforcing rib.

[0010] Preferably, the outer surface of the bin cover is provided with bin cover reinforcing ribs.

[0011] Preferably, the inner side of the bin cover has a relief concave surface opposite to the wire spool groove, and the relief concave surface is located in the middle of the annular groove.

[0012] Preferably, the recessed surface is a concave structure that is deep in the middle and shallow on the outside; the support shaft is located in the middle of the recessed surface, and an annular recess is formed between the support shaft and the annular groove.

[0013] Preferably, the side of the wire reel opposite to the bin cover is the outer end face of the wire reel, and a reinforcing rib is provided on the outer end face of the wire reel. The height of the annular wire-stopping protrusion is the same as the height of the reinforcing rib. After the bin cover is fastened, the reinforcing rib is inserted into the annular clearance part.

[0014] Compared with the prior art, the binding machine with an annular wire-blocking groove in the wire reel compartment cover provided by this utility model has the following advantages: This solution sets an annular wire-blocking protrusion on the wire reel and sets an annular groove on the inner side of the compartment cover that cooperates with the annular wire-blocking protrusion, which can prevent the binding wire from entering the gap between the wire reel and the compartment cover. The setting of the annular groove makes an annular protrusion formed on the outer side of the compartment cover, which helps to improve the strength of the compartment cover. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the linear storage bin in Embodiment 1 of this utility model.

[0016] Figure 2 This is a cross-sectional view of the wire tray in Embodiment 1 of this utility model.

[0017] Figure 3 This is a structural diagram of the bin cover in Embodiment 1 of this utility model.

[0018] Figure 4 This is a structural diagram of the coil in Embodiment 1 of this utility model.

[0019] Figure 5 This is a structural diagram of a strapping machine according to Embodiment 1 of this utility model.

[0020] Figure 6 This is a cross-sectional view of the wire tray in Embodiment 2 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] Example 1

[0023] See Figures 1 to 5According to the embodiment of the binding machine with a wire spool compartment and a wire-blocking surface provided by the utility model, the machine includes a housing, a wire feeding mechanism, a wire cutting mechanism, a braking mechanism, a wire twisting mechanism, and a wire spool compartment 1 disposed within the housing; the wire spool compartment 1 includes a wire spool groove 11 disposed within the housing and a compartment cover 12 hinged to the wire spool groove 11; a wire spool 2 is installed inside the wire spool compartment 1, and binding wire is wound on the wire spool 2; a support shaft 121 cooperating with the wire spool 2 is provided in the middle of the inner side of the compartment cover 12; an annular groove 122 is provided on the inner side of the compartment cover 12 opposite to the wire spool groove 11; and an annular groove 122 is provided on the outer end face of the wire spool 2. A ring-shaped wire-stopping protrusion 21 is inserted into an annular groove 122, forming a gap between the ring-shaped wire-stopping protrusion 21 and the annular groove 122. The annular groove 122 includes an annular bottom wall, an annular inner side wall and an annular outer side wall 1221 on both sides of the annular bottom wall. The ring-shaped wire-stopping protrusion 21 includes an annular top surface opposite to the annular bottom wall, an annular inner side surface opposite to the annular inner side wall, and an annular outer side surface 211 opposite to the annular outer side wall 1221. The gap between the annular outer side wall 1221 and the annular outer side surface 211 is smaller than the diameter of the binding wire. A rotatable wire spool 2 is provided in the wire spool compartment 1. The wire spool 2 is composed 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. Binding wire is wound in the winding cavity. Shaft grooves are provided at both ends of the shaft cylinder, and the shaft grooves are rotatably engaged with the support shaft 121. This design provides an annular wire-blocking protrusion 21 on the wire reel 2 and an annular groove 122 that mates with the annular wire-blocking protrusion 21 on the inner side of the compartment cover 12. This prevents the binding wire from entering the gap between the wire reel 2 and the compartment cover 12. The annular groove 122 creates an annular protrusion on the outer surface of the compartment cover 12, which helps to improve the strength of the compartment cover 12. By blocking the binding wire with the annular wire-blocking protrusion 21 on the wire reel, the binding wire is prevented from entering the gap between the wire reel 2 and the compartment cover 12, which helps to simplify the structural design of the compartment cover 12 and improve the reliability of the wire-blocking mechanism.

[0024] See Figures 2 to 4 According to the above-described embodiment of the utility model, the side of the spool 2 opposite to the cover 12 is the outer end face of the spool 2, and the side of the spool 2 opposite to the spool groove 11 is the inner end face of the spool 2. A reinforcing rib 22 is provided on the outer end face of the spool 2, and the height of the annular wire-blocking protrusion 21 is greater than the height of the reinforcing rib 22. Compared with the prior art where an annular step is provided on the inner side of the cover 12 to misalign with the edge of the spool 2 to prevent the binding wire from entering, the structure of this utility model, because the height of the annular wire-blocking protrusion 21 is greater than the height of the reinforcing rib 22, allows for a larger axial misalignment between it and the annular groove 122, resulting in higher reliability in preventing the binding wire from entering the gap. At the same time, the larger size of the annular wire-blocking protrusion 21 allows for a certain degree of error between the annular wire-blocking protrusion 21 and the annular groove 122.

[0025] See Figures 2 to 4According to the above-described embodiment of the utility model, a reinforcing rib 123 is provided on the outer side of the bin cover 12. This helps to improve the mechanical strength of the bin cover 12.

[0026] Example 2

[0027] This embodiment is structurally similar to Embodiment 1 above, except that a recessed avoidance surface is added to the inner side of the cover 12. See [link / reference]. Figure 6 The inner side of the cover 12, opposite to the wire reel groove 11, has a relief concave surface located in the middle of the annular groove 122. The relief concave surface has a concave structure that is deep in the middle and shallow on the outside; the support shaft 121 is located in the middle of the relief concave surface, and an annular relief portion 124 is formed between the support shaft 121 and the annular groove 122. The side of the wire reel 2 opposite to the cover 12 is the outer end face of the wire reel 2, and a reinforcing rib 22 is provided on the outer end face of the wire reel 2. The height of the annular wire-stopping protrusion 21 is the same as the height of the reinforcing rib 22; after the cover 12 is fastened, the reinforcing rib 22 is inserted into the annular relief portion 124. The annular clearance part 124 allows the annular protrusion on the coil 2 to be lowered in height, making it the same height as the reinforcing rib 22. This allows the annular wire-blocking protrusion 21 to be inserted into the annular groove 122 of the cover 12, while also preventing interference between the reinforcing rib 22 on the coil 2 and the cover 12. This eliminates the need to increase the manufacturing difficulty of the coil 2 and allows the binding wire to enter the gap between the coil 2 and the cover 12.

[0028] 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 an annular wire-blocking groove in the spool cover, comprising a housing, a wire feeding mechanism, a wire cutting mechanism, a braking mechanism, a wire twisting mechanism, and a spool compartment disposed within the housing; the spool compartment includes a spool groove disposed within the housing and a compartment cover hinged to the spool groove, a spool is installed inside the spool compartment, binding wire is wound on the spool, and a support shaft cooperating with the spool is provided in the middle of the inner side of the compartment cover, characterized in that: The inner side of the bin cover is provided with an annular groove opposite to the wire reel groove, and the outer end face of the wire reel is provided with an annular wire-stopping protrusion. The annular wire-stopping protrusion is inserted into the annular groove, and a gap is formed between the annular wire-stopping protrusion and the annular groove. The annular groove includes an annular bottom wall, an annular inner side wall and an annular outer side wall located on both sides of the annular bottom wall; The annular retaining wire protrusion includes an annular top surface opposite to the annular bottom wall, an annular inner side surface opposite to the annular inner side wall, and an annular outer side surface opposite to the annular outer side wall. The gap between the outer wall of the ring and the outer surface of the ring is smaller than the diameter of the binding wire.

2. The bundling machine with an annular wire-stopping groove in the wire reel compartment cover according to claim 1, characterized in that, The side of the wire reel opposite the bin cover is the outer end face of the wire reel. The outer end face of the wire reel is provided with reinforcing ribs, and the height of the annular wire-stopping protrusion is greater than the height of the reinforcing ribs.

3. The bundling machine with an annular wire-stopping groove in the wire reel compartment cover according to claim 1, characterized in that, The outer side of the bin cover is equipped with reinforcing ribs.

4. The bundling machine with an annular wire-stopping groove in the wire reel compartment cover according to claim 1, characterized in that, The inner side of the bin cover has a relief concave surface opposite to the wire spool groove, and the relief concave surface is located in the middle of the annular groove.

5. The bundling machine with an annular wire-stopping groove in the wire reel compartment cover according to claim 4, characterized in that, The clearance concave surface has a concave structure that is deep in the middle and shallow on the outside; the support shaft is located in the middle of the clearance concave surface, and an annular clearance part is formed between the support shaft and the annular groove.

6. The bundling machine with an annular wire-stopping groove in the wire reel compartment cover according to claim 5, characterized in that, The side of the wire reel opposite the bin cover is the outer end face of the wire reel. A reinforcing rib is provided on the outer end face of the wire reel, and the height of the annular retaining wire protrusion is the same as the height of the reinforcing rib. After the bin cover is fastened, the reinforcing rib is inserted into the annular clearance part.

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