Downward pressing device for assembling limiting steel balls of speed reducer

Abstract

The pressing device comprises a base and a machine frame, one end of the upper portion of the base is fixedly connected with the machine frame, the middle of the upper portion of the machine frame is fixedly connected with a driving air cylinder, the two sides of the interior of the machine frame are fixedly connected with limiting sliding columns, and the limiting sliding columns are fixedly connected with the driving air cylinder. And the output end of the lower portion of the driving air cylinder penetrates through the rack to be fixedly connected with a lifting frame, self-lubricating shaft sleeves are fixedly connected to the middles of the two sides of the lifting frame, and the two limiting sliding columns are movably sleeved with return springs between the base and the lifting frame. By arranging the driving air cylinder, the lifting frame, the lower pressing plate and the assembling base in a matched mode, during work, the center shaft of the speed reducer is embedded into the assembling base, and the driving air cylinder drives the lifting frame, so that the lower pressing plate presses the striking block to the maximum compression stroke of the spring under the condition that the center shaft is not affected, and the striking block is pressed to the maximum compression stroke of the spring. Therefore, the steel ball limiting groove of the center shaft can be exposed, and the next step of steel ball assembly is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembly process, especially relates to a down -pressing device for the assembly of the limiting steel ball of speed reducer. BACKGROUND

[0002] The electric hand drill is a kind of hand-held electric tool, is a kind of portable small drilling tool, by small motor, speed reducer, control switch, drill chuck and drill head several parts, electric drill is the drilling tool powered by alternating current or direct current battery, is used to open hole on article or hole through object, electric hand drill is the largest product in electric tool industry, is widely used in construction, decoration, furniture and other industries, electric hand drill can be used as electric wrench by replacing head component, also has more professional impact wrench.

[0003] The center shaft of the speed reducer produced by the applicant is provided with ball groove on both sides to limit the impact block by corresponding steel ball, since the steel ball is needed for limiting, and the limiting workpiece is generally assembled in the last step, therefore, the impact block and spring sleeve need to be assembled on the center shaft first before the steel ball is assembled, and when the steel ball is assembled, the spring resistance needs to be overcome to press the spring to the maximum compression degree to expose the corresponding ball groove, manual assembly cannot provide and maintain such a large pressing force to assemble the steel ball, although the hydraulic machine or air compressor on the market can solve the above problems, generally has a separate power supply mechanism and corresponding control assembly, not only increases procurement cost, but also affects the design of assembly production line, increases assembly cost, and the subsequent equipment maintenance cost is high, therefore, a down -pressing device for the assembly of the limiting steel ball of speed reducer center shaft is needed. UTILITARIAN CONTENT

[0004] The utility model is aimed at at least solving one of the technical problems in the prior art, providing a down -pressing device for the assembly of the limiting steel ball of speed reducer, which solves the above problems.

[0005] To achieve the above object, a down -pressing device for the assembly of the limiting steel ball of speed reducer is provided, which comprises a base and a rack, the upper end of the base is fixedly connected with the rack, the upper middle part of the rack is fixedly connected with a driving cylinder, the inside of the rack is fixedly connected with a limiting slide column on both sides, the lower output end of the driving cylinder is fixedly connected with a lifting frame through the rack, the middle part of both sides of the lifting frame is fixedly connected with a self-lubricating bushing, two limiting slide columns are movably sleeved with return springs between the base and the lifting frame, the lower middle part of the lifting frame is fixedly connected with a fixed seat, the end away from the lifting frame of the fixed seat is fixedly connected with a pressing plate, the middle part of the end away from the fixed seat of the pressing plate is provided with a center shaft blocking groove, the position corresponding to the pressing plate on the upper side of the base is fixedly connected with an assembly seat;

[0006] The middle part of the upper end of the base away from the rack is fixedly connected with a material disc, both sides of the end of the rack close to the material disc are fixedly connected with a safety grating frame, and the lower sides of the end of the rack close to the material disc are respectively provided with a cylinder switch and an emergency stop button.

[0007] According to the lower pressing device for assembling the limiting steel ball of the speed reducer, the two limiting slide columns are respectively penetrated through the corresponding self-lubricating shaft sleeves and are in sliding connection with the self-lubricating shaft sleeves.

[0008] According to the lower pressing device for assembling the limiting steel ball of the speed reducer, the center of the assembling seat is provided with a workpiece embedding groove, and the inner diameter of the workpiece embedding groove corresponds to the diameter of the central shaft of the speed reducer.

[0009] According to the lower pressing device for assembling the limiting steel ball of the speed reducer, the width of the central shaft preventing groove corresponds to the diameter of the central shaft of the speed reducer.

[0010] According to the lower pressing device for assembling the limiting steel ball of the speed reducer, the cylinder switch is in electric control connection with the electromagnetic valve of the driving cylinder through the safety grating frame, and the electromagnetic valve of the driving cylinder is a three-way control valve which is respectively communicated with an air inlet pipeline and an air outlet pipeline.

[0011] According to the lower pressing device for assembling the limiting steel ball of the speed reducer, a plurality of lubricating graphites are fixedly embedded on the sleeve inner walls of the two self-lubricating shaft sleeves.

[0012] The above scheme has at least one of the following beneficial effects:

[0013] 1. According to the structure of the central shaft of the speed reducer, the driving cylinder is arranged, and the lifting frame, the lower pressing plate and the assembling seat are matched, so that when working, the central shaft of the speed reducer is embedded on the assembling seat, the driving cylinder drives the lifting frame, the lower pressing plate is pressed to the maximum compression stroke of the spring without affecting the central shaft, the steel ball limiting groove of the central shaft is exposed, the next step of the steel ball assembly work is facilitated, and the practicability of the device is improved.

[0014] 2. The driving cylinder is provided with a three-way control valve which is respectively communicated with an air inlet pipeline and an air outlet pipeline, and two return springs on the limiting slide column are matched, so that the high-pressure pneumatic pipeline of the factory can be directly connected, when the driving cylinder is used, the air inlet pipeline is connected and the air outlet pipeline is closed, the driving cylinder drives the lifting frame to press down and keeps the pressed state, the staff can assemble the steel ball, after the assembly is completed, the air inlet pipeline is closed and the air outlet pipeline is opened, the driving cylinder is automatically returned and discharged under the action of the two return springs, a separate air pump power and a corresponding control mechanism are not needed, the practicability of the device is improved.

[0015] The additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments;

[0017] Fig. 1 It is a left side perspective structure schematic view of the present application of a down-pressing device for assembling limiting steel balls of a speed reducer;

[0018] Fig. 2 It is a right side perspective structure schematic view of the present application of a down-pressing device for assembling limiting steel balls of a speed reducer;

[0019] Fig. 3 It is a front structure schematic view of the present application of a down-pressing device for assembling limiting steel balls of a speed reducer.

[0020] LEGEND

[0021] 1, base; 2, rack; 3, drive cylinder; 4, limiting slide column; 5, lifting frame; 6, self-lubricating shaft sleeve; 7, fixed seat; 8, down-pressing plate; 9, assembling seat; 10, material tray; 11, cylinder switch; 12, safety grating frame; 13, emergency stop button; 14, center shaft anti-blocking groove; 15, return spring. DETAILED DESCRIPTION

[0022] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0023] REFERENCE Figs. 1-3 The present application embodiment provides a down-pressing device for assembling limiting steel balls of a speed reducer, comprising a base 1 and a rack 2, the upper end of the base 1 is fixedly connected with the rack 2, the upper middle part of the rack 2 is fixedly connected with a drive cylinder 3, the inside of the rack 2 is fixedly connected with limiting slide columns 4 on both sides, the lower output end of the drive cylinder 3 is fixedly connected with a lifting frame 5 through the rack 2, the middle part of the lifting frame 5 is fixedly connected with self-lubricating shaft sleeves 6 on both sides, a plurality of lubricating graphites are fixedly embedded on the sleeve inner wall of the two self-lubricating shaft sleeves 6, the two limiting slide columns 4 are respectively through the corresponding self-lubricating shaft sleeves 6 and are slidingly connected with the self-lubricating shaft sleeves 6, the self-lubricating shaft sleeves 6 can reduce the resistance between the shaft sleeve and the limiting slide column 4 on the basis of exempting from lubricating oil, and reduce;

[0024] Two limit sliding columns 4 are movably sleeved with return springs 15 between the base 1 and the lifting frame 5, the lower middle part of the lifting frame 5 is fixedly connected with a fixed seat 7, the end of the fixed seat 7 away from the lifting frame 5 is fixedly connected with a lower pressing plate 8, the middle part of the end of the lower pressing plate 8 away from the fixed seat 7 is provided with a central shaft preventing slot 14, the width of the central shaft preventing slot 14 corresponds to the diameter of the central shaft of the speed reducer, the upper part of the base 1 is fixedly connected with an assembly seat 9 at the position corresponding to the lower pressing plate 8, and the central shaft of the speed reducer can be embedded on the assembly seat 9 during work, then the lifting frame 5 is driven by the power of the driving cylinder 9, so that the lower pressing plate 8 drives the impact block sleeved outside the central shaft to the maximum compression stroke of the spring below without affecting the central shaft, so that the steel ball limiting groove of the central shaft is exposed, and the next step of steel ball assembly is facilitated.

[0025] The upper part of the base 1 is fixedly connected with a material disc 10 at the middle part of the end away from the rack 2, the rack 2 is fixedly connected with a safety grating frame 12 on both sides of the end close to the material disc 10, the lower part of the end of the rack 2 close to the material disc 10 is provided with a cylinder switch 11 and an emergency stop button 13 on both sides respectively, the cylinder switch 11 is electrically connected with the electromagnetic valve of the driving cylinder 3 through the safety grating frame 12, the electromagnetic valve of the driving cylinder 3 is a three-way control valve which is respectively communicated with an air inlet pipeline and an air outlet pipeline, which cooperates with the two return springs 15 on the limit sliding column 4, so that the driving cylinder 3 can be directly connected with the high-pressure pneumatic pipeline uniformly laid in the factory, when the driving cylinder 3 is used, the driving cylinder 3 can drive the lifting frame 5 to press down by closing the air outlet pipeline while connecting the air inlet pipeline, and the driving cylinder 3 always remains in the pressed state after the impact block is pressed to the maximum compression stroke of the spring, so that the staff can assemble the steel balls, and after the assembly is completed, the driving cylinder 3 can be automatically returned by closing the air inlet pipeline and opening the air outlet pipeline, without the need to set a separate air pump power assembly and a corresponding control mechanism, thereby simplifying the cost and.

[0026] Working principle: the utility model discloses a center shaft is embedded in the assembly seat 9 to the reducer in working, then through the power of drive cylinder 9 to drive lifting frame 5, make the lower pressing plate 8 in the case that does not influence the center shaft, strike the block and press down to the maximum compression stroke of spring, thereby expose the steel ball limit slot of center shaft, facilitate the steel ball assembly of next step, and the drive cylinder 3 that provides the drive power of pressing down is provided with the three -way control valve that respectively has the air intake pipeline and exhaust pipeline, cooperate two return springs 15 on the limit slide column 4, make drive cylinder 3 can be directly connected the high pressure pneumatic pipeline of factory unification, when drive cylinder 3 uses, only need to close exhaust pipeline while communicating air intake pipeline, drive cylinder 3 can drive lifting frame 5 to press down, and always keep the state of pressing down after strike the block and press down to the maximum compression stroke of spring, facilitate the assembly of staff's steel ball, and after assembly is completed, only need to close air intake pipeline and open exhaust pipeline, drive cylinder 3 can be automatically exhaust return under the action of two return springs 15, need not set up the air pump power assembly and corresponding control mechanism.

[0027] The utility model has been described in detail in the above in connection with the drawings, but the utility model is not limited to the above embodiment, within the knowledge scope of ordinary skill in the art, various changes can be made without departing from the utility model's purpose.

Claims

1. A down-pressing device for assembling a check ball of a speed reducer, comprising a base (1) and a frame (2), characterized in that: The upper end of the base (1) is fixedly connected with a rack (2), the upper middle part of the rack (2) is fixedly connected with a drive cylinder (3), both sides of the inside of the rack (2) are fixedly connected with limiting slide columns (4), the lower output end of the drive cylinder (3) is fixedly connected with a lifting frame (5) penetrating through the rack (2), the middle part of both sides of the lifting frame (5) are fixedly connected with self-lubricating shaft sleeves (6), both the limiting slide columns (4) are movably sleeved with return springs (15) between the base (1) and the lifting frame (5), the lower middle part of the lifting frame (5) is fixedly connected with a fixed seat (7), the end, away from the lifting frame (5), of the fixed seat (7) is fixedly connected with a pressing plate (8), the middle part of the end, away from the fixed seat (7), of the pressing plate (8) is provided with a central shaft preventing slot (14), the upper part of the base (1) is fixedly connected with an assembling seat (9) corresponding to the pressing plate (8). The middle part of the end, away from the rack (2), of the base (1) is fixedly connected with a material disc (10), both sides of the end, close to the material disc (10), of the rack (2) are fixedly connected with safety grating racks (12), the lower sides of the end, close to the material disc (10), of the rack (2) are respectively provided with a cylinder switch (11) and an emergency stop button (13).

2. The lower pressing device for assembling the limiting steel ball of a speed reducer according to claim 1, characterized in that, Both the limiting slide columns (4) are respectively penetrating through the corresponding self-lubricating shaft sleeves (6) and are in sliding connection with the self-lubricating shaft sleeves (6).

3. The lower pressing device for assembling the limiting steel ball of a speed reducer according to claim 1, characterized in that, The center of the assembling seat (9) is provided with a workpiece embedding groove, and the inner diameter of the workpiece embedding groove corresponds to the diameter of the central shaft of the speed reducer.

4. The lower pressing device for assembling the limiting steel ball of a speed reducer according to claim 1, characterized in that, The width of the central shaft preventing slot (14) corresponds to the diameter of the central shaft of the speed reducer.

5. The lower pressing device for assembling the limiting steel ball of a speed reducer according to claim 1, characterized in that, The cylinder switch (11) is in electric control connection with the electromagnetic valve of the drive cylinder (3) through the safety grating rack (12), and the electromagnetic valve of the drive cylinder (3) is a three-way control valve which is respectively communicated with an air inlet pipeline and an air outlet pipeline.

6. The lower pressing device for assembling the limiting steel ball of a speed reducer according to claim 1, characterized in that, A plurality of lubricating graphites are fixedly embedded on the sleeve inner walls of the self-lubricating shaft sleeves (6).

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