A hinge traction pressing device

Abstract

The present invention discloses a hinge traction pressing device, which relates to the technical field of hinge production. The hinge traction pressing device includes a hinge positioning mechanism, a traction centering mechanism and a pressing mechanism; the hinge positioning mechanism positions the positions of the hinge seat and the bushing before assembly; the pressing mechanism is used to push the hinge shaft through the shaft hole on the hinge seat and the bushing hole on the bushing; the traction centering mechanism is used to keep the shaft hole and the bushing hole in a coaxial state; wherein, during the process of the hinge shaft passing through the shaft hole and the bushing hole, the traction centering mechanism can traction the hinge shaft to align its axis with the axis of the shaft hole. In the present invention, through the cooperative design of each structure, the situation that the positioning tooling cannot coaxial-align the shaft hole and the bushing hole due to production errors and production precision in the actual manufacturing of the hinge seat and the bushing can be eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of hinge production, and particularly relates to a hinge traction pressing device. Background Art

[0002] A hinge is a metal fitting used to connect two solids and allow relative rotation between them; among them, hinges are also applied to washing machines. The hinges on washing machines are generally used to connect the cabinet and the door body of the washing machine to facilitate controlling the rotation and opening of the door body.

[0003] Figure 7 、 Figure 8 The hinge shown is a washing machine door hinge, which includes a hinge seat, a bushing, and a hinge shaft; two swivel arm brackets are arranged at intervals on the hinge seat, and coaxial shaft holes are provided at the ends of the two swivel arm brackets. The two ends of the hinge shaft are fixed in the two shaft holes, and the bushing is sleeved on the hinge shaft; among them, the two ends of the hinge shaft and the shaft holes are in interference fit, and the hinge shaft and the bushing hole of the bushing are in clearance fit.

[0004] It should be noted that Figure 7 、 Figure 8 For the specific installation method and working method of the washing machine door hinge shown on the washing machine, reference can be specifically made to the patent application No. CN201910034469.X, and the patent with the title of a washing machine door hinge structure and a washing machine.

[0005] When the above-mentioned washing machine door hinge is produced, the hinge seat, the bushing, and the hinge shaft are first produced, and then the hinge seat, the bushing, and the hinge shaft are assembled; the general assembly method is: the bushing is fixed between the two swivel arm brackets through a positioning tooling, and the shaft holes and the bushing holes are ensured to be coaxially aligned. The hinge shaft is inserted into one of the shaft holes, and the worker uses a knocking tool to knock the hinge shaft so that the hinge shaft passes through the bushing hole and is finally fastened in the other shaft hole to complete the assembly of the hinge.

[0006] Regarding the above-mentioned hinge assembly method, the inventor found the following technical problems:

[0007] 1. Before assembly, the hinge seat and the bushing will use a positioning tooling for position positioning to make the shaft holes and the bushing holes on the hinge seat and the bushing coaxially aligned, which is convenient for the perforation operation of the hinge shaft;

[0008] However, the size of the positioning tooling is calculated and designed according to the ideal situation, that is, production errors and production precision are not considered; in actual manufacturing, there will be individual dimensional deviations of the bushing and the hinge seat. For the bushing and the hinge seat with manufacturing deviations, when the positioning tooling is used for positioning, small precision deviations will also cause the shaft holes and the bushing holes to be unable to be coaxially aligned, resulting in the hinge shaft being unable to pass through;

[0009] 2. Meanwhile, during the perforation process of the hinge shaft, there will be a situation where the movement trajectory deviates, causing the axis of the hinge shaft to deviate from the axes of the shaft hole and the bushing hole, resulting in the hinge shaft being unable to pass through the second shaft hole and the assembly failing.

[0010] Therefore, how to solve the above problems is a technical problem that those skilled in the art urgently need to solve.

[0011] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the present invention and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0012] In view of the above technical problems, an embodiment of the present invention provides a hinge traction pressing device to solve the problems raised in the above background art.

[0013] The present invention provides the following technical solutions:

[0014] A hinge traction pressing device includes: a hinge positioning mechanism, a traction centering mechanism, and a pressing mechanism;

[0015] The hinge positioning mechanism positions the positions of the hinge seat and the bushing before assembly;

[0016] The pressing mechanism is used to push the hinge shaft through the shaft hole on the hinge seat and the bushing hole on the bushing;

[0017] The traction centering mechanism is used to keep the shaft hole and the bushing hole in a coaxial state;

[0018] Among them, during the process of the hinge shaft passing through the shaft hole and the bushing hole, the traction centering mechanism can traction the hinge shaft to align its axis with the axis of the shaft hole.

[0019] Preferably, the hinge positioning mechanism includes a first positioning block and a second positioning block arranged at intervals, and a third positioning block fixed on the second positioning block;

[0020] The gap between the first positioning block and the second positioning block encloses a first positioning groove;

[0021] Two second positioning grooves are arranged at intervals on the second positioning block;

[0022] The third positioning block is located between the two second positioning grooves; among them, a third positioning groove extending along the length direction of the third positioning block is provided on the third positioning block.

[0023] Preferably, the length value of the third positioning block is the same as the length value between the inner groove edges of the two second positioning grooves.

[0024] Preferably, the traction centering mechanism includes a traction bracket and a traction shaft slidably penetrating through the traction bracket; when the hinge seat and the bushing are positioned on the hinge positioning mechanism, the axis of the traction shaft passes through the shaft hole and the bushing hole.

[0025] Preferably, the front end of the traction shaft has a magnetic adsorption function.

[0026] Preferably, the traction bracket includes a fixed block and at least one vertical plate fixedly mounted on the fixed block, and the fixed block is fixed on the second positioning block; wherein, a through hole for the traction shaft to slidably penetrate is provided on the vertical plate.

[0027] Preferably, for the second positioning groove near the fixed block, the outer groove edge thereof is in the same vertical plane as one side edge of the fixed block.

[0028] Preferably, the pressing mechanism includes a linear actuator and a fixing bracket for fixing the linear actuator; the linear actuator can push the hinge shaft forward.

[0029] Preferably, the fixing bracket includes a vertical plate and a support block; the linear actuator is horizontally fixed on the support block, and its tail is fixed on one side of the vertical plate.

[0030] Preferably, the hinge positioning mechanism, the traction centering mechanism and the pressing mechanism are arranged on the base.

[0031] The hinge traction and pressing device provided by the embodiment of the present invention has the following beneficial effects:

[0032] 1. In the present invention, through the combined design of each structure, it is possible to eliminate the situation where the positioning tooling cannot co-axially align the shaft hole and the bushing hole due to production errors and production precision in the actual manufacturing of the hinge seat and the bushing.

[0033] 2. At the same time, during the process of the hinge shaft passing through the holes, the hinge shaft can be centered and tractioned to avoid the situation where the axis of the hinge shaft deviates from the axes of the shaft hole and the bushing hole, resulting in the hinge shaft being unable to pass through the second shaft hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the first angle of the present invention;

[0035] Figure 2 It is a schematic structural diagram of the second angle of the present invention;

[0036] Figure 3 For the present invention Figure 1 The partial enlarged view of A in;

[0037] Figure 4 For the present invention Figure 2 The partial enlarged view of B in;

[0038] Figure 5 It is a structural schematic diagram of the first process of hinge assembly for the present invention;

[0039] Figure 6 It is a structural schematic diagram of the second process of hinge assembly for the present invention;

[0040] Figure 7 It is a structural schematic diagram of the hinge;

[0041] Figure 8 It is an exploded view of the hinge;

[0042] In the figure: 110 - hinge seat; 120 - swing arm bracket; 130 - bushing; 140 - hinge shaft; 121 - shaft hole; 131 - bushing hole; 210 - base; 220 - positioning block one; 230 - positioning block two; 240 - positioning block three; 231 - positioning groove two; 241 - positioning groove three; 251 - fixing block; 252 - vertical plate; 253 - traction shaft; 261 - vertical plate; 262 - linear actuator; 263 - support block; 200a - positioning groove one. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0044] Refer to Figures 1-8 。

[0045] In view of the problems mentioned in the above background technology, the embodiments of the present invention provide a hinge traction and pressing device to solve the above technical problems, and its technical solutions are as follows:

[0046] A hinge traction and pressing device 200 includes: a hinge positioning mechanism, a traction and centering mechanism, and a pressing mechanism; wherein,

[0047] The hinge positioning mechanism positions the positions of the hinge seat 110 and the bushing 130 before assembly;

[0048] The pressing mechanism is used to push the hinge shaft 140 through the shaft hole 121 on the hinge seat 110 and the bushing hole 131 on the bushing 130;

[0049] The traction and centering mechanism is used to keep the shaft hole 121 and the bushing hole 131 in a coaxial state;

[0050] During the process that the hinge shaft 140 passes through the shaft hole 121 and the bushing hole 131, the traction centering mechanism can traction the axis of the hinge shaft 140 to align with the axis of the shaft hole 121.

[0051] It should be noted that the design principle of the hinge traction pressing device is as follows:

[0052] 1. Position the hinge seat 110 and the bushing 130 before assembly through the hinge positioning mechanism;

[0053] 2. Adjust the positions of the hinge seat 110 and the bushing 130 through the traction centering mechanism to make the shaft hole 121 and the bushing hole 131 in a coaxial state;

[0054] 3. Insert the front end of the hinge shaft 140 into the first shaft hole 121, and push the hinge shaft 140 through the shaft hole 121 on the hinge seat 110 and the bushing hole 131 on the bushing 130 through the pressing mechanism;

[0055] 4. During the perforation process of the hinge shaft 140, the traction centering mechanism performs traction centering on the hinge shaft 140 to prevent the axis of the hinge shaft 140 from deviating from the axes of the shaft hole 121 and the bushing hole 131; until the hinge shaft 140 penetrates into the second shaft hole 121, and the assembly process of the hinge is completed.

[0056] In this embodiment, the hinge positioning mechanism includes a first positioning block 220 and a second positioning block 230 arranged at intervals, and a third positioning block 240 fixed on the second positioning block 230;

[0057] The gap between the first positioning block 220 and the second positioning block 230 encloses a first positioning groove 200a; the first positioning groove 200a is used for clamping and positioning the hinge seat 110;

[0058] Two second positioning grooves 231 are arranged at intervals on the second positioning block 230; the two second positioning grooves 231 are used for positioning the back positions of the two swing arm brackets 120;

[0059] The third positioning block 240 is located between the two second positioning grooves 231;

[0060] Wherein, a third positioning groove 241 extending along the length direction of the third positioning block 240 is arranged on the third positioning block 240; the third positioning groove 241 is used for positioning the bushing 130;

[0061] It should be noted that the first positioning groove 200a, the second positioning grooves 231, and the third positioning groove 241 are specifically designed according to the specific shapes and dimensions of the hinge seat 110 and the bushing 130, and no specific limitations are made here.

[0062] In this embodiment, the working method of the hinge positioning mechanism is as follows:

[0063] 1.Figure 7 , Figure 8 As shown in Figure 8 , the end of the swing arm bracket 120 faces upward and the back faces, and the hinge seat 110 is vertically inserted into the first positioning groove 200a.

[0064] After the hinge seat 110 is vertically inserted into the first positioning groove 200a, the backs of the two swing arm brackets 120 are limited in the two second positioning grooves 231, and the bushing 130 is limited in the third positioning groove 241.

[0065] At this time, the shaft hole 121 and the bushing hole 131 are in a coaxial state in theory; however, due to possible individual dimensional deviations of the bushing 130 and the hinge seat 110 in actual manufacturing, the axes of the shaft hole 121 and the bushing hole 131 cannot be coaxially aligned.

[0066] In this embodiment, the length value of the third positioning block 240 is the same as the length value between the inner groove edges of the two second positioning grooves 231; it should be noted that the position between the two second positioning grooves 231 is the inner side, and the position outside the two second positioning grooves 231 is the outer side.

[0067] Designing the length value of the third positioning block 240 to be the same as the length value between the inner groove edges of the two second positioning grooves 231 can limit the third positioning block 240 between the two swing arm brackets 120 when the backs of the two swing arm brackets 120 are limited in the two second positioning grooves 231. When the pressing mechanism pushes the hinge shaft 140 to perform the perforation operation, the third positioning block 240 can prevent the swing arm bracket 120 from moving and improve the positioning stability.

[0068] In this embodiment, the traction centering mechanism includes a traction bracket and a traction shaft 253 slidably penetrating through the traction bracket. The front end of the traction shaft 253 has a magnetic adsorption function; a strong magnet such as a neodymium iron boron magnet can be provided at the front end of the traction shaft 253, or it can be made of a material with strong magnetism.

[0069] The front end of the traction shaft 253 is designed to have a magnetic adsorption function, and its purpose is to magnetically adsorb the front end of the traction shaft 253 to the hinge shaft 140; in this way, the hinge shaft 140 will be adsorbed and positioned on the traction shaft 253 during the perforation process, so that the traction shaft 253 and the hinge shaft 140 are in a coaxially aligned state.

[0070] Among them, when the hinge seat 110 and the bushing 130 are positioned on the hinge positioning mechanism, the axis of the traction shaft 253 passes through the shaft hole 121 and the bushing hole 131.

[0071] In this embodiment, the traction bracket includes a fixed block 251 and at least one vertical plate 252 fixed on the fixed block 251. The fixed block 251 is fixed on the second positioning block 230; among them, a through hole through which the traction shaft 253 slides is provided on the vertical plate 252.

[0072] Figure 4 As shown, in this embodiment, the second positioning groove 231 near the fixing block 251 has its outer groove edge in the same vertical plane as one side edge of the fixing block 251; the position setting of the fixing block 251 further positions the swing arm bracket 120 from one side, and when the pressing mechanism pushes the hinge shaft 140 to perform the perforation operation, the fixing block 251 can prevent the swing arm bracket 120 from moving.

[0073] In this embodiment, the pressing mechanism includes a linear driver 262 and a fixing bracket for fixing the linear driver 262. The linear driver 262 can push the hinge shaft 140 forward; the linear driver 262 is a cylinder or a push rod motor; when the linear driver 262 works, its driving end can drive the hinge shaft 140 to pass through the shaft hole 121 on the hinge seat 110 and the bushing hole 131 on the bushing 130.

[0074] In this embodiment, the fixing bracket includes a vertical plate 261 and a support block 263; the linear driver 262 is horizontally fixed on the support block 263, and its tail is fixed on one side of the vertical plate 261.

[0075] In this embodiment, the hinge positioning mechanism, the traction centering mechanism, and the pressing mechanism are arranged on the base 210.

[0076] A hinge traction pressing device method provided by an embodiment of the present invention is as follows:

[0077] 1. Positioning of the positions of the hinge seat 110 and the bushing 130 before assembly, specifically:

[0078] Figure 7 、 Figure 8 As shown, make the end of the swing arm bracket 120 face upward and the back face towards, vertically insert the hinge seat 110 into the first positioning groove 200a, and limit the backs of the two swing arm brackets 120 in the two second positioning grooves 231. At the same time, limit the bushing 130 in the third positioning groove 241 to complete the positioning operation;

[0079] At this time, the shaft hole 121 and the bushing hole 131 are in a coaxial state in theory; however, due to possible individual dimensional deviations of the bushing 130 and the hinge seat 110 in actual manufacturing, the axes of the shaft hole 121 and the bushing hole 131 cannot be coaxially aligned;

[0080] 2. Position of the sliding traction shaft 253 on the traction bracket, so that the traction shaft 253 completely penetrates the shaft hole 121 and the bushing hole 131, making the shaft hole 121 and the bushing hole 131 in a coaxial state;

[0081] 3. Insert one end of the hinge shaft 140 into the first shaft hole 121 and make the hinge shaft 140 adsorbed on the front end of the traction shaft 253;

[0082] 4. The hinge shaft 140 performs a perforation operation. Specifically, the linear driver 262 works, and its driving end drives the hinge shaft 140 to pass through the shaft hole 121 on the hinge seat 110 and the bushing hole 131 on the bushing 130;

[0083] During the perforation operation of the hinge shaft 140, since the traction shaft 253 has penetrated into the shaft hole 121 and the bushing hole 131 in advance, the shaft hole 121 and the bushing hole 131 are in a coaxial state; and the hinge shaft 140 has been adsorbed on the front end of the traction shaft 253, so that the hinge shaft 140 and the traction shaft 253 are also in a coaxial state;

[0084] As the traction shaft 253 withdraws from the shaft hole 121 and the bushing hole 131, the hinge shaft 140 enters the shaft hole 121 and the bushing hole 131. In this way, through the coaxial connection of the traction shaft 253 and the hinge shaft 140, the shaft hole 121 and the bushing hole 131 can be kept in a coaxial state all the time; at the same time, the magnetic adsorption positioning of the traction shaft 253 on the hinge shaft 140 can always align the axis of the hinge shaft 140 with the axis of the shaft hole 121, and the assembly operation of the hinge 100 can be successfully completed.

[0085] A hinge traction and pressing device provided by an embodiment of the present invention has the following beneficial effects: In the present invention, through the cooperative design of each structure, the situation that the positioning tooling cannot coaxial-align the shaft hole and the bushing hole due to production errors and production precision and other problems in the actual manufacturing of the hinge seat and the bushing can be eliminated; at the same time, during the perforation process of the hinge shaft, the hinge shaft can be centered and tractioned to avoid the situation that the axis of the hinge shaft deviates from the axis of the shaft hole and the bushing hole, resulting in the hinge shaft being unable to pass through the second shaft hole.

[0086] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units. They may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0087] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "set", "connected", "fixed", "swivel-connected", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions of the present invention and the concept of the present invention, and all such changes or substitutions shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A hinge traction pressing device, characterized in that, Including: A hinge positioning mechanism, a traction centering mechanism, and a pressing mechanism; The hinge positioning mechanism positions the hinge seat and the bushing before assembly; The pressing mechanism is used to push the hinge shaft through the shaft hole on the hinge seat and the bushing hole on the bushing; The traction centering mechanism is used to keep the shaft hole and the bushing hole in a coaxial state; The hinge positioning mechanism includes a first positioning block and a second positioning block arranged at intervals, and a third positioning block fixed on the second positioning block; The gap between the first positioning block and the second positioning block encloses a first positioning groove; Two second positioning grooves are arranged at intervals on the second positioning block; The third positioning block is located between the two second positioning grooves; wherein, a third positioning groove extending along the length direction of the third positioning block is provided on the third positioning block; The traction centering mechanism includes a traction bracket and a traction shaft slidably penetrating through the traction bracket; the front end of the traction shaft has a magnetic adsorption function; when the hinge seat and the bushing are positioned on the hinge positioning mechanism, the axis of the traction shaft passes through the shaft hole and the bushing hole; Among them, during the process of the hinge shaft passing through the shaft hole and the bushing hole, the traction centering mechanism can traction the hinge shaft to align its axis with the axis of the shaft hole; in this way, the hinge shaft will be adsorbed and positioned on the traction shaft all the time during the perforation process, so that the traction shaft and the hinge shaft are in a coaxial alignment state.

2. The hinge traction pressing device according to claim 1, wherein The length value of the third positioning block is the same as the length value between the inner side edges of the two second positioning grooves.

3. The hinge traction pressing device according to claim 1, wherein, The traction bracket includes a fixed block and at least one vertical plate vertically fixed on the fixed block, and the fixed block is fixed on the second positioning block; wherein, a through hole through which the traction shaft slides is provided on the vertical plate.

4. The hinge traction pressing device according to claim 3, wherein Among them, For the second positioning groove close to the fixed block, its outer side edge is in the same vertical plane as a side edge of the fixed block.

5. The hinge traction pressing device according to claim 1, characterized in that, The pressing mechanism includes a linear driver and a fixing frame for fixing the linear driver; the linear driver can push the hinge shaft forward.

6. The hinge traction pressing device according to claim 5, wherein, The fixing frame includes a vertical plate and a supporting block; the linear driver is horizontally fixed on the supporting block, and its tail is fixed on one side of the vertical plate.

7. The hinge traction pressing device according to claim 1, wherein The hinge positioning mechanism, the traction centering mechanism, and the pressing mechanism are arranged on a base.

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