Pressing arm with wire pressing wheel convenient to disassemble and assemble and wire feeder applying pressing arm

Abstract

The utility model discloses a pressing arm with a wire pressing wheel convenient to disassemble and assemble and a wire feeder applying the pressing arm. The pressing arm comprises a main arm, a mounting wheel shell and the wire pressing wheel. The mounting wheel shell is arranged on the main arm, the wire pressing wheel is inserted into the main shaft hole of the mounting wheel shell and the auxiliary shaft hole of the wire pressing wheel through the wire pressing wheel shaft, and the mounting wheel shell is fixed to the main arm through the locking assembly, so that when the wire pressing wheel needs to be replaced, only the mounting wheel shell needs to be detached from the main arm, and the wire pressing wheel can be replaced. And then the wire pressing wheel shaft is taken down from the mounting wheel shell, so that the wire pressing wheel can be conveniently replaced. According to the wire feeder with the pressing arm, when the wire pressing wheel is replaced, the main arm does not need to be completely detached, and therefore replacement and maintenance are more convenient and easier.

Description

Technical Field

[0001] This utility model relates to the field of wire feeders, and in particular to a pressure arm that facilitates the disassembly and assembly of the pressure roller and a wire feeder using the same. Background Technology

[0002] A wire feeder is a device used in welding equipment to transport welding wire. A brushless motor wire feeder with an encoder, disclosed in patent number 202022328365.0, can be referenced. This type of wire feeder includes a main body, a pressure arm pivotally connected to the main body, a pressure roller on the pressure arm, and a feeding roller on the main body. The pressure arm presses the pressure roller and the feeding roller together, thereby moving the welding wire. A torsion spring is installed between the pressure arm and the main body, allowing the pressure arm to automatically spring open when the restriction is released. However, this type of wire feeder has a problem: the shaft used to fix the pressure roller is generally located inside the pressure arm. Furthermore, when the pressure arm is raised, the shaft is still obscured by the surface of the main body. Therefore, when the pressure roller needs to be replaced, the entire pressure arm must be removed before the shaft can be taken out and the pressure roller replaced. However, because the pressure arm needs to be equipped with a torsion spring and a locking plate, disassembling and assembling the pressure arm requires tools and is relatively cumbersome. Utility Model Content

[0003] To solve the above problems, the purpose of this utility model is to provide a pressure arm that can replace the pressure roller without disassembling the pressure arm and without the aid of tools, as well as a wire feeder that uses the pressure arm.

[0004] The technical solution adopted by this utility model to solve the problem is: a pressure arm that facilitates the disassembly and assembly of the pressure roller, comprising:

[0005] Main arm, the lower part of which is provided with a mounting groove;

[0006] The mounting wheel housing has a mounting cavity with a lower opening and at least one spindle hole extending into the mounting cavity. The mounting wheel housing is detachably mounted in the mounting groove, and the outer surface of the main arm is provided with a locking component for fixing the mounting wheel housing.

[0007] The wire pressing wheel has a secondary shaft hole and is movably inserted into the mounting cavity. The mounting wheel housing is provided with a wire pressing wheel shaft that is synchronously inserted into the main shaft hole and the secondary shaft hole.

[0008] As a further improvement to the above technical solution, the locking component includes:

[0009] A through hole is provided on the main arm and extends into the mounting groove. The inner side of the mounting groove opposite the through hole is provided with a threaded hole coaxial with the through hole. The mounting wheel housing is provided with a mating hole that extends through the front and back.

[0010] A locking shaft is provided with an external thread at its end. The locking shaft is simultaneously inserted into the through hole and the mating hole, and the external thread is screwed into the threaded hole.

[0011] As a further improvement to the above technical solution, the locking assembly is a set, and the top of the mounting wheel housing is provided with an abutment surface. When the mounting wheel housing is installed in the mounting groove, the abutment surface abuts against the inner wall of the mounting groove.

[0012] As a further improvement to the above technical solution, the main shaft hole extends through both sides of the mounting wheel housing, and the pressing wheel shaft includes a shaft body and a stop member connected to the end of the shaft body. The shaft body is inserted into the main shaft hole along one outer surface of the mounting wheel housing, and the stop member is located on the other outer surface of the mounting wheel housing and connected to the shaft body.

[0013] As a further improvement to the above technical solution, the portion of the spindle hole located outside the mounting cavity is an outer hole, and the portion of the spindle hole located inside the mounting cavity is an inner hole. One of the outer hole and the inner hole that mates with the end of the shaft is a non-circular hole. The end of the shaft includes a non-circular rod segment with the same shape as the non-circular hole. The end face of the end of the shaft also includes a support surface located outside the non-circular rod segment. The support surface is used to abut against the inner wall of the mounting cavity.

[0014] As a further improvement to the above technical solution, the shaft is inserted into the main shaft hole along the inner outer surface of the mounting wheel housing.

[0015] As a further improvement to the above technical solution, the stop is a locking bolt, and the end face of the shaft is provided with an internal thread that mates with the locking bolt.

[0016] As a further improvement to the above technical solution, the mounting wheel housing includes two parallel side plates and a connecting plate for connecting the tops of the two side plates.

[0017] As a further improvement to the above technical solution, there are two main shaft holes, which are symmetrically arranged around the locking assembly, and two pressure wheels are installed on the mounting wheel housing.

[0018] A wire feeder includes a wire feeder body and a wire feeding wheel mounted on the wire feeder body. The wire feeder is pivotally connected to a pressure arm, which is easy to assemble and disassemble, and the wire feeder body is provided with a linkage-type pressure regulator that cooperates with the main arm and is used to fix the main arm. When the main arm is fixed by the linkage-type pressure regulator, the pressure wheel cooperates with the wire feeding wheel.

[0019] The beneficial effects of this utility model are as follows: By setting a mounting wheel housing on the main arm, the pressure roller is inserted into the main shaft hole and the auxiliary shaft hole of the mounting wheel through the pressure roller shaft. The mounting wheel housing is then fixed to the main arm by a locking assembly. Therefore, when the pressure roller needs to be replaced, it is only necessary to remove the mounting wheel housing from the main arm and then remove the pressure roller shaft from the mounting wheel housing for convenient replacement. Furthermore, with this pressure roller, the main arm does not need to be completely disassembled when replacing the pressure roller, making replacement and maintenance much more convenient and easier. Attached Figure Description

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is one of the structural schematic diagrams of a wire feeder;

[0022] Figure 2 This is the second schematic diagram of the wire feeder.

[0023] Figure 3 This is a schematic diagram of the pressure arm structure;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the pressure arm. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figures 1 to 4 A pressure arm for easy assembly and disassembly of the pressure roller, comprising:

[0030] Main arm 10, the lower part of which is provided with mounting groove 11;

[0031] Mounting wheel housing 20, the mounting wheel housing 20 is provided with a mounting cavity 201 with a lower opening, the mounting wheel housing 20 is provided with at least one spindle hole 22 penetrating into the mounting cavity 201, the mounting wheel housing 20 is detachably mounted in the mounting groove 11, and the outer surface of the main arm 10 is provided with a locking component for fixing the mounting wheel housing 20.

[0032] The wire pressing wheel 30 is provided with a secondary shaft hole. The wire pressing wheel 30 is movably inserted into the mounting cavity 201. The mounting wheel housing 20 is provided with a wire pressing wheel shaft that is synchronously inserted into the main shaft hole 22 and the secondary shaft hole.

[0033] This utility model also discloses a wire feeder, including a wire feeder body 50 and a wire feeding wheel 51 mounted on the wire feeder body 50. The wire feeder is characterized by having a pressure arm pivotally connected to the wire feeder, which facilitates the disassembly and assembly of the pressure wheel. The wire feeder body 50 is provided with a linkage-type pressure regulator (not shown in the figure, the linkage-type pressure regulator is a well-known technology in the art, and can be referred to the reference patents provided in the background art, so it will not be described in detail in this application). When the main arm 10 is fixed by the linkage-type pressure regulator, the pressure wheel 30 cooperates with the wire feeding wheel 51.

[0034] By installing a mounting housing 20 on the main arm 10, the pressure roller 30 is inserted into the main shaft hole 22 and the auxiliary shaft hole of the mounting housing 20 via the pressure roller shaft. The mounting housing 20 is then fixed to the main arm 10 by a locking assembly. Therefore, when the pressure roller 30 needs to be replaced, simply remove the mounting housing 20 from the main arm 10 and then remove the pressure roller shaft from the mounting housing 20 for easy replacement. Furthermore, with this pressure roller design, the main arm 10 does not need to be completely disassembled when replacing the pressure roller 30, making replacement and maintenance much more convenient and easier.

[0035] In this solution, a preferred first embodiment of the locking component includes:

[0036] A through hole 12 is provided on the main arm 10 and extends into the mounting groove 11. The inner side of the mounting groove 11 facing the through hole 12 is provided with a threaded hole 13 coaxial with the through hole 12. The mounting wheel housing 20 is provided with a mating hole 21 that extends through the front and back.

[0037] Locking shaft 14, the end of which is provided with external thread 15, the locking shaft 14 is simultaneously inserted into through hole 12 and mating hole 21 and the external thread 15 is screwed into threaded hole 13.

[0038] In the first embodiment using locking components, there are two states. One is that the mounting wheel housing 20 is not fully inserted into the bottom of the mounting groove 11, thus forming a contact with the inner wall of the mounting groove 11. In this case, if it is necessary to ensure the stability of the mounting wheel housing 20, it is generally recommended to use two or more sets of locking components. If only one set of locking components is used, it is preferable that the top of the mounting wheel housing 20 is provided with an abutment surface. When the mounting wheel housing 20 is installed in the mounting groove 11, the abutment surface forms a contact with the inner wall of the mounting groove 11.

[0039] In other embodiments, the locking component may also be other implementations, such as quick-release buckles, auxiliary clips, or other structures.

[0040] In this design, preferably, the spindle hole 22 extends to both sides of the mounting housing 20. The pressing wheel shaft includes a shaft body 40 and a stop connected to the end of the shaft body 40. The shaft body 40 is inserted into the spindle hole 22 along one outer surface of the mounting housing 20, and the stop is located on the other outer surface of the mounting housing 20 and connected to the shaft body 40. Alternatively, preferably, the shaft body 40 is inserted into the spindle hole 22 along the inner outer surface of the mounting housing 20.

[0041] Further optimization is preferred, with the portion of the spindle hole 22 located outside the mounting cavity 201 being an outer hole 221, and the portion of the spindle hole 22 located inside the mounting cavity 201 being an inner hole 222. One of the outer hole 221 and the inner hole 222 that mates with the end of the shaft 40 is a non-circular hole. The end of the shaft 40 includes a non-circular rod segment 43 with the same shape as the non-circular hole. The end face of the shaft 40 also includes a support surface located outside the non-circular rod segment 43. By inserting the non-circular rod segment 43 into the non-circular hole, the shape of the non-circular rod segment 43 and the non-circular hole are adapted to ensure that the shaft 40 cannot rotate. At this time, the support surface abuts against the inner wall of the mounting cavity 201, and the shaft 40 is fixed on the outer surface of the mounting wheel housing 20 by a stopper, so that the shaft 40 cannot move in the axial direction.

[0042] In the above embodiment, the preferred stop is a locking bolt 44, and the end face of the shaft 40 is provided with an internal thread 42 that mates with the locking bolt 44. In other embodiments, the stop can also be a retaining pin, and the end of the shaft 40 is provided with a pin hole that mates with the retaining pin.

[0043] In this design, in order to maximize the space of the mounting cavity 201 and reduce the use of materials, the mounting wheel housing 20 includes two parallel side plates and a connecting plate for connecting the tops of the two side plates.

[0044] In further optimization, this solution preferably includes two spindle holes 22, which are symmetrically arranged around the locking assembly. Two pressure rollers 30 are mounted on the mounting wheel housing 20. In different embodiments, the number of spindle holes 22 may also be one, three, or other variations.

[0045] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A pressure arm for easy assembly and disassembly of the pressure roller, characterized in that, include: Main arm (10), the lower part of which is provided with mounting groove (11); Mounting wheel housing (20), the mounting wheel housing (20) is provided with a mounting cavity (201) with a lower opening, the mounting wheel housing (20) is provided with at least one spindle hole (22) penetrating into the mounting cavity (201), the mounting wheel housing (20) is detachably installed in the mounting groove (11), and the outer surface of the main arm (10) is provided with a locking component for fixing the mounting wheel housing (20); The pressing wheel (30) is provided with a secondary shaft hole. The pressing wheel (30) is movably inserted into the mounting cavity (201). The mounting wheel housing (20) is provided with a pressing wheel shaft that is synchronously inserted into the main shaft hole (22) and the secondary shaft hole.

2. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 1, characterized in that: The locking component includes: A through hole (12) is provided on the main arm (10) and extends into the mounting groove (11). The mounting groove (11) has a threaded hole (13) coaxial with the through hole (12) on its inner side facing the through hole (12). The mounting wheel housing (20) has a mating hole (21) that extends through the front and back. Locking shaft (14), the end of which is provided with external thread (15), the locking shaft (14) is simultaneously inserted into the through hole (12) and the mating hole (21) and the external thread (15) is screwed into the threaded hole (13).

3. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 2, characterized in that: The locking assembly is a set, and the top of the mounting wheel housing (20) is provided with an abutting surface. When the mounting wheel housing (20) is installed in the mounting groove (11), the abutting surface abuts against the inner wall of the mounting groove (11).

4. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 1, characterized in that: The main shaft hole (22) extends through both sides of the mounting wheel housing (20). The pressing wheel shaft includes a shaft body (40) and a stop connected to the end of the shaft body (40). The shaft body (40) is inserted into the main shaft hole (22) along one side of the outer surface of the mounting wheel housing (20). The stop is located on the other side of the outer surface of the mounting wheel housing (20) and is connected to the shaft body (40).

5. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 4, characterized in that: The portion of the spindle hole (22) located outside the mounting cavity (201) is the outer hole (221), and the portion of the spindle hole (22) located inside the mounting cavity (201) is the inner hole (222). One of the outer hole (221) and the inner hole (222) that mates with the end of the shaft (40) is a non-circular hole. The end of the shaft (40) includes a non-circular rod segment (43) with the same shape as the non-circular hole. The end face of the end of the shaft (40) also includes a support surface located outside the non-circular rod segment (43). The support surface is used to abut against the inner wall of the mounting cavity (201).

6. A pressure arm for easy assembly and disassembly of the pressure roller as described in claim 4 or 5, characterized in that: The shaft (40) is inserted into the main shaft hole (22) along the inner outer surface of the mounting wheel housing (20).

7. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 4, characterized in that: The stop is a locking bolt (44), and the end face of the shaft (40) is provided with an internal thread (42) that mates with the locking bolt (44).

8. The pressure arm for easy assembly and disassembly of the pressure roller as described in claim 1, characterized in that: The mounting wheel housing (20) includes two parallel side plates and a connecting plate for connecting the tops of the two side plates.

9. A pressure arm for easy assembly and disassembly of the pressure roller as described in claim 1, characterized in that: There are two main shaft holes (22), which are symmetrically arranged with the locking assembly as the center. Two pressure wheels (30) are installed on the mounting wheel housing (20).

10. A wire feeder, comprising a wire feeder body (50) and a wire feeder wheel (51) mounted on the wire feeder body (50), characterized in that, The wire feeder is pivotally connected to a pressure arm as described in any of claims 1 to 9, which facilitates the disassembly and assembly of the pressure roller. The main body (50) of the wire feeder is provided with a linkage-type pressure regulator that cooperates with the main arm (10) and is used to fix the main arm (10). When the main arm (10) is fixed by the linkage-type pressure regulator, the pressure roller (30) cooperates with the wire feeder (51).

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