Fixing claw for rapidly replacing pressing head of press-in machine

Abstract

The utility model relates to the technical field of press-in machines, in particular to a fixing claw for quickly replacing a press-in machine pressing head, which comprises an arc-shaped pressing claw, the arc-shaped pressing claw is arranged on one side of an installation position of a press-in template through a fastener, and the arc-shaped pressing claw can rotate around the fastener by taking the fastener as an axis; a pressing head is arranged on the installation position, a flange extending outwards is arranged at the end, close to the installation position, of the pressing head, and when the arc-shaped pressing claw is located on the flange of the pressing head, the arc-shaped pressing claw is locked through a fastener. According to the utility model, the technical problems of tedious disassembly and replacement processes and low disassembly and assembly efficiency caused by fixing the pressure head through a bolt in the prior art can be solved; by arranging the arc-shaped pressing claw, the pressing head can be replaced in only about 12 seconds, the operation process is simplified, the operation time is saved, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of press-fitting machines, in particular to a fixed claw for rapid replacement of a press head of a press-fitting machine. Background Art

[0002] Press is the abbreviation of press, press machine, hydraulic press, oil press, and is a molding machine used for industrial products to be assembled and molded by pressure. Figure 1 As shown, the press mainly includes a frame 1, a pressing template 2 slidably arranged on the frame 1, and a workbench 3 located below the pressing template 2, wherein a pressing head 21 is fixed on the pressing template 2; when performing the pressing work, the workpiece to be assembled is first placed on the workbench 3, and then the pressing template 2 is driven downward by the hydraulic cylinder 4, so that the pressing head 21 on the pressing template 2 contacts or extends into the mounting hole of the workpiece to be assembled for pressing, and after the pressing is completed, the workbench 3 and the pressing template 2 are reset to the initial position.

[0003] For example, our company uses a press to press bearings onto crankcases. The press head of the press is fixed to the press-fitting template by bolts, and the press head usually has multiple models, which are replaced according to the parts to be pressed. Currently, when replacing the press head, it is necessary to loosen the bolts one by one to remove the press head, and then align the replaced press head with the installation position, insert the bolts again and tighten them. The above operation process is relatively cumbersome, time-consuming, and has low disassembly and assembly efficiency. In addition, the press head is vertically fixed at the bottom of the press-fitting template. When replacing, the operator needs to tilt his head to one side to better observe whether the screw is inserted into the threaded hole. The existing disassembly and installation process is cumbersome, and the operator needs to bend, lower his head, and turn his head many times when replacing, which brings a lot of inconvenience to the operator. Utility Model Content

[0004] The utility model provides a fixing claw for quickly replacing a pressing head of a pressing machine, which can solve the technical problem that the pressing head is fixed by bolts in the prior art, resulting in complicated disassembly and replacement process and low disassembly and assembly efficiency.

[0005] This application provides the following technical solutions:

[0006] A fixed jaw for quick replacement of a pressing head of a press machine comprises an arc-shaped pressing jaw, which is arranged on one side of a mounting position of a press template through a fastener, and can rotate around the fastener with the fastener as the axis; a pressing head is arranged on the mounting position, and a flange extending outward is arranged at the end of the pressing head close to the mounting position, and when the arc-shaped pressing jaw is located on the flange of the pressing head, the arc-shaped pressing jaw is locked by the fastener.

[0007] Beneficial effects:

[0008] 1. When the pressure head needs to be replaced, first loosen the fastener, then move the arc-shaped pressure claw to make it leave the flange of the pressure head, and then remove the pressure head. Then position the new pressure head on the installation position, move the arc-shaped pressure claw again to rotate it to the flange of the pressure head, and finally tighten the fastener to fix the pressure head on the installation position of the press-fitting template; compared with the existing multiple loosening and tightening of bolts, the present application only needs to tighten one part of the fastener, which is simpler to operate, saves working time, and improves operating efficiency.

[0009] 2. Experimental verification shows that it only takes about 12 seconds to disassemble and install a new pressure head by using the arc-shaped pressure claw provided in this application, while it takes 330-350 seconds to switch the pressure head using the traditional disassembly and assembly method. The technical solution of this application achieves the purpose of quickly replacing the pressure head; and because the operation is simple and the operation time is short, the operator does not need to bend, lower his head, or turn his head multiple times when replacing.

[0010] 3. When in use, you only need to fix the arc-shaped pressure claw on the pressing template through fasteners, and there is no need to change the original pressure head structure. It is particularly suitable for the technical transformation of old presses. Compared with designing a new pressure head structure and a new fixing method, the transformation cost of this application is lower, and it is more economical and practical.

[0011] Furthermore, the arc-shaped pressing claw includes a connecting portion and an arc-shaped portion, and the arc-shaped portion is a C-shaped structure; the fastener passes through the connecting portion and is threadedly connected to the pressing template, and is rotationally connected to the connecting portion.

[0012] Beneficial effect: By setting the arc portion as a C-shaped structure, when the arc portion is located on the flange of the pressure head, the C-shape can press at least half of the flange, thereby improving the stability of the fixation. At the same time, the C-shaped notch can avoid the pressure head, which is convenient for quick positioning, tightening or disassembly; the fastener is threadedly connected to the pressing template, and the arc-shaped pressing claw can be released or tightened by only twisting the fastener, and the connection structure is simple.

[0013] Furthermore, the connecting portion and the arc-shaped portion are integrally formed, or the connecting portion and the arc-shaped portion are welded.

[0014] Furthermore, the connecting portion is square or oval.

[0015] Furthermore, the fastener is a bolt.

[0016] Furthermore, a positioning hole is provided on the installation position of the pressing template, and the end of the pressing head close to the flange extends outward to form a protrusion matching with the positioning hole, and the protrusion is inserted into the positioning hole.

[0017] Beneficial effects: A positioning hole is set at the installation position to position the pressure head, which makes it easy to quickly find the position during installation; a protrusion is set at the end of the pressure head, and the protrusion is inserted into the positioning hole to further limit the position and facilitate the arc-shaped pressure claw to lock the pressure head.

[0018] Furthermore, L-shaped auxiliary card slots are symmetrically arranged on both sides of the bottom of the press-fitting template, and auxiliary pressing plates are detachably arranged on the auxiliary card slots, and arc-shaped pressing claws and pressing heads are arranged on the auxiliary pressing plates.

[0019] Beneficial effects: An auxiliary slot is provided under the press-fitting template to facilitate the installation of an auxiliary pressing plate, so that the press has a variety of press-fitting forms and can be suitable for the press-fitting of different types of parts; and the pressure head provided on the auxiliary pressing plate can also be replaced and locked by an arc-shaped pressing claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a prior art press-in machine;

[0021] Figure 2 It is a top view of the arc-shaped pressing claw of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the arc-shaped pressing claw fixing the pressing head;

[0023] Figure 4 It is a bottom view of the press-fitting template;

[0024] Figure 5 It is a front view of the press in the second embodiment;

[0025] Figure 6 It is a schematic diagram of the structure of the arc-shaped pressing claw fixing the pressing head in the second embodiment. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The marks in the drawings of the specification include: frame 1, pressing template 2, positioning hole 201, pressing head 21, flange 221, auxiliary slot 22, workbench 3, hydraulic cylinder 4, arc-shaped pressing claw 5, arc-shaped part 51, connecting part 52, fastener 6, gasket 61, auxiliary pressing plate 7, connecting block 8.

[0028] Embodiment 1

[0029] like Figure 2-3 As shown, the fixed jaw for quick replacement of the pressing head of the pressing machine includes an arc-shaped pressing jaw 5, which is arranged on one side of the installation position of the pressing template 2 through a fastener 6, and the arc-shaped pressing jaw 5 can rotate around the fastener 6 with the fastener 6 as the axis; specifically, the arc-shaped pressing jaw 5 includes a connecting portion 52 and an arc-shaped portion 51, the arc-shaped portion 51 is a C-shaped structure, and the connecting portion 52 can be square or elliptical, and a square shape is preferably used in this embodiment; the connecting portion 52 is integrally formed with the arc-shaped portion 51, for example, by wire cutting, and the connecting portion 52 can also be welded to the arc-shaped portion 51, and the former is preferred in this embodiment.

[0030] The fastener 6 passes through the connection part 52 and is threadedly connected to the pressing template 2, and is rotatably connected to the connection part 52; specifically, a threaded hole is provided on the pressing template 2, and a through hole is provided on the connection part 52 of the arc-shaped pressing claw 5, and the fastener 6 passes through the through hole on the connection part 52 and is threadedly connected to the threaded hole on the pressing template 2, and a gasket 61 is also provided between the fastener 6 and the connection part 52; in order to facilitate the rotation of the fastener 6, a torsion bar can also be welded at the end of the fastener 6, and the fastener 6 can be tightened or loosened by holding the torsion bar. Specifically, the fastener 6 in this embodiment can use an existing bolt, preferably a butterfly bolt.

[0031] like Figure 3 As shown, a pressing head 21 is provided on the installation position of the pressing template 2, and a flange 221 extending outward is provided at the end of the pressing head 21 close to the installation position. When the arc-shaped pressing claw 5 is located on the flange 221 of the pressing head 21, the arc-shaped pressing claw 5 is locked by the fastener 6. Figure 4 As shown, a positioning hole 201 is also provided on the installation position of the pressing template 2, and the end of the pressing head 21 close to the flange 221 extends outward to form a protrusion (not shown in the figure) that matches the positioning hole 201, and the protrusion is inserted into the positioning hole 201.

[0032] During installation, first insert the protrusion of the pressure head 21 into the positioning hole 201, then loosen the fastener 6, rotate the arc-shaped pressure claw 5, so that the arc-shaped portion 51 is located on the flange 221 of the pressure head 21, and then tighten the fastener 6 to fix the pressure head 21 in the positioning hole 201 of the pressing template 2; when it is necessary to switch the pressure head 21, loosen the fastener 6, rotate the arc-shaped pressure claw 5, so that the arc-shaped portion 51 is separated from the flange 221, remove the pressure head 21, install a new pressure head 21, and lock it again, thereby achieving the purpose of quickly replacing the pressure head 21.

[0033] By using the arc-shaped pressure claw 5 provided in the present application to fix the pressure head 21, it only takes 12 seconds to complete the disassembly and installation of the new pressure head 21, while using the traditional bolt installation method, it takes 350 seconds to switch the pressure head 21. The technical solution of the present application achieves the purpose of quickly replacing the pressure head 21, saves working time, and improves operating efficiency; and because the operation is simple and the working time is short, the operator does not need to bend, lower his head, and turn his head multiple times when replacing.

[0034] Embodiment 2

[0035] The difference between this embodiment and the first embodiment is that Figure 5 As shown, L-shaped auxiliary card slots 22 are symmetrically arranged on both sides of the bottom of the press-fitting template 2, and an auxiliary pressing plate 7 is detachably arranged on the auxiliary card slot 22. Specifically, when the auxiliary pressing plate 7 is inserted into the auxiliary card slot 22, the auxiliary pressing plate 7 is completely fixed on the auxiliary card slot 22 by bolts; Figure 6As shown, the arc-shaped pressing claw 5 and the pressing head 21 are arranged on the auxiliary pressing plate 7 through the connecting block 8, and the connecting block 8 is fixed to the middle part of the auxiliary pressing plate 7 by bolts, or the arc-shaped pressing claw 5 and the pressing head 21 are directly arranged on the auxiliary pressing plate 7.

[0036] In this embodiment, the auxiliary pressing plate 7 and the connecting block 8 are arranged so that the press machine has a variety of pressing forms. The auxiliary pressing plate 7 can be replaced according to the difference of the pressed workpiece, so that it is suitable for the pressing of different types of parts; in addition, the pressing head 21 arranged on the auxiliary pressing plate 7 can also be quickly replaced by the arc-shaped pressing claw 5.

[0037] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A fixed claw for quick replacement of the press head of a press machine, characterized in that: It comprises an arc-shaped pressing claw, which is arranged on one side of the installation position of the pressing template through a fastener, and the arc-shaped pressing claw can rotate around the fastener with the fastener as the axis; a pressing head is arranged on the installation position, and a flange extending outward is arranged at the end of the pressing head close to the installation position. When the arc-shaped pressing claw is located on the flange of the pressing head, the arc-shaped pressing claw is locked by the fastener.

2. The fixing claw for quick replacement of the pressing head of the pressing machine according to claim 1, characterized in that: The arc-shaped pressing claw comprises a connecting portion and an arc-shaped portion, wherein the arc-shaped portion is a C-shaped structure; the fastener passes through the connecting portion and is threadedly connected to the pressing template, and is rotationally connected to the connecting portion.

3. The fixing claw for quick replacement of the pressing head of the pressing machine according to claim 2, characterized in that: The connecting portion and the arc-shaped portion are integrally formed, or the connecting portion and the arc-shaped portion are welded.

4. The fixing claw for quick replacement of the pressing head of the pressing machine according to claim 3, characterized in that: The connecting portion is square or oval.

5. The fixing claw for quick replacement of the pressing head of the pressing machine according to claim 4, characterized in that: The fastener is a bolt.

6. The fixing claw for quick replacement of the pressing head of the pressing machine according to claim 5, characterized in that: A positioning hole is arranged on the installation position of the press-fitting template, and the end of the press head close to the flange extends outward to form a protrusion matched with the positioning hole, and the protrusion is inserted into the positioning hole.

7. The fixing claw for quick replacement of the pressing head of the pressing machine according to any one of claims 1 to 6, characterized in that: L-shaped auxiliary card slots are symmetrically arranged on both sides of the bottom of the press-fitting template, and auxiliary pressing plates are detachably arranged on the auxiliary card slots, and arc-shaped pressing claws and a pressing head are arranged on the auxiliary pressing plates.

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