Workpiece assembling device

Abstract

The invention discloses a workpiece assembling device which comprises a base, an ejector rod, a connecting sleeve, a sliding guide sleeve, a spring and a blanking cap. An ejector rod is vertically arranged in the center of the base; an ejector rod limiting table is arranged on the upper portion of the ejector rod in a surrounding mode. The outer side of the position, below the ejector rod limiting table, of the ejector rod is sleeved with a blanking cap; a spring and a sliding guide sleeve are sequentially sleeved on the outer side of the position, above the ejector rod limiting table, of the ejector rod from bottom to top; a part containing hole is formed in the center of the sliding guide sleeve. The upper part of the ejector rod is upwards inserted into the part accommodating hole; the circumferential outer side of the sliding guide sleeve is sleeved with a hollow connecting sleeve; the inner wall around the lower portion of the connecting sleeve is fixedly connected with the blanking cap through threads. The device is scientific in design, internal parts (such as copper gaskets) of the oil supply assembly can be conveniently and controllably fed into the shell of the oil supply assembly to be assembled, the assembling work efficiency of the oil supply assembly is remarkably improved, and the labor intensity of workers and the overall production cost are reduced.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, in particular to a workpiece assembly device, which is a quick assembly device for oil supply component parts in a flame intake heater of a diesel engine. Background Art

[0002] In the low-temperature environment of the plateau, diesel engines have difficulty in cold starting. To achieve the required first-time ignition success rate, a cold start flame intake heater is required. The flame intake heater is an important component to ensure reliable starting and operation of diesel engines in low temperatures.

[0003] The flame intake heater is installed in the engine intercooler. When the engine is started, the intake heater starts working, spraying high-temperature flames to heat the surrounding air temperature, achieving the effect of "warming the cylinder" of the engine, making the engine smoother during cold start and improving responsiveness.

[0004] For the flame intake heater, the fuel supply component is a key component, which is responsible for precisely controlling the diesel injection amount when the fuel supply is turned on (for example, at a pressure of 0.25MPa, the diesel injection amount per unit time is required to be 26-35ml / min).

[0005] During the production and assembly process of the oil supply component, because its internal parts (such as copper gaskets) are small, it is difficult to clamp the internal parts of the oil supply component when placing them into the inner hole of the oil supply component shell, and thus they often slip. When slipping, they are easily flipped from a flat state to a vertical state, causing them to get stuck in the middle section of the hole wall of the inner hole of the oil supply component shell. Therefore, in order to assemble the internal parts of the oil supply component, repeated attempts and corrections are required, which not only significantly increases the labor intensity of the staff, but also reduces production efficiency and increases production costs.

[0006] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a workpiece assembly device in view of the technical defects in the prior art.

[0008] To this end, the present invention provides a workpiece assembly device, which includes a base, a push rod, a connecting sleeve, a sliding guide sleeve, a spring and a blocking cover;

[0009] A top rod is vertically arranged at the center of the base;

[0010] A push rod limiting platform is arranged around the upper part of the push rod;

[0011] A blocking cover is provided on the outer side of the push rod below the push rod limit platform;

[0012] The outer side of the ejector rod above the ejector rod limit platform is covered with a spring and a sliding guide sleeve in sequence from bottom to top;

[0013] The center of the sliding guide sleeve has a parts receiving hole that is vertically distributed throughout.

[0014] The upper portion of the ejector pin is inserted upward into the part receiving hole;

[0015] Wherein, a hollow connecting sleeve is sleeved on the circumferential outer side of the sliding guide sleeve;

[0016] The inner walls around the lower part of the connecting sleeve are fixedly connected with the plugging cover by threads.

[0017] It can be seen from the technical solution provided by the above invention that compared with the prior art, the present invention provides a workpiece assembly device with a scientific structural design, which can conveniently and controllably deliver the internal parts of the oil supply component (for example, but not limited to copper gaskets) into the oil supply component shell for assembly, significantly improving the assembly efficiency of the oil supply component, reducing the labor intensity of the staff and the overall production cost, and has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A cross-sectional view of a workpiece assembly device provided by the present invention;

[0019] Figure 2a A cross-sectional view of a base in a workpiece assembly device provided by the present invention;

[0020] Figure 2b A top view of a base in a workpiece assembly device provided by the present invention;

[0021] Figure 3a A front view of a push rod in a workpiece assembly device provided by the present invention;

[0022] Figure 3b A top view of a push rod in a workpiece assembly device provided by the present invention;

[0023] Figure 4a A cross-sectional view of a connecting sleeve in a workpiece assembly device provided by the present invention;

[0024] Figure 4b A top view of a connecting sleeve in a workpiece assembly device provided by the present invention;

[0025] Figure 5a A cross-sectional view of a sliding guide sleeve in a workpiece assembly device provided by the present invention;

[0026] Figure 5b A top view of a sliding guide sleeve in a workpiece assembly device provided by the present invention;

[0027] Figure 6 A cross-sectional view of a blocking cover in a workpiece assembly device provided by the present invention;

[0028] Figure 7 It is a schematic three-dimensional structural diagram of an oil supply assembly housing of an oil supply assembly before parts are assembled by the workpiece assembly device provided by the present invention;

[0029] Figure 8 A cross-sectional view of an oil supply assembly required for assembling a workpiece assembly device provided by the present invention (a cross-sectional view of the oil supply assembly after parts assembly, i.e., a cross-sectional view of the finished oil supply assembly);

[0030] Figure 9 It is a schematic diagram of the exploded structure of a finished oil supply component;

[0031] In the figure, 1 is the base; 2 is the push rod; 3 is the connecting sleeve; 4 is the sliding guide sleeve; 6 is the plugging cover; and 100 is the oil supply assembly. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0036] See also Figure 1 、 Figure 2a to Figure 2b 、 Figure 3a to Figure 3b 、 Figures 4a to 4b 、 Figure 5a to Figure 5b 、 Figures 6 to 9 The present invention provides a workpiece assembly device, which is a matching assembly device for the fuel supply component parts in the flame intake heater of a diesel engine. The device includes a base 1, a push rod 2, a connecting sleeve 3, a sliding guide sleeve 4, a spring 5 and a plug cover 6;

[0037] A top rod 2 is vertically arranged at the center of the base 1;

[0038] A push rod limiting platform 201 is provided around the upper part of the push rod 2;

[0039] A blocking cover 6 is provided on the outer side of the push rod 2 below the push rod limiting platform 201;

[0040] The outer side of the push rod 2 above the push rod limit platform 201 is covered with a spring 5 and a sliding guide sleeve 4 in sequence from bottom to top;

[0041] The center of the sliding guide sleeve 4 has a parts receiving hole 402 that is vertically distributed through it.

[0042] The upper portion of the ejector pin 2 is inserted upward into the component receiving hole 402;

[0043] Among them, a hollow connecting sleeve 3 is sleeved on the circumferential outer side of the sliding guide sleeve 4;

[0044] The inner walls around the lower part of the connecting sleeve 3 are fixedly connected to the blocking cover 6 by threads.

[0045] In the present invention, in a specific implementation, the shape and size of the part receiving hole 402 correspond to the shape and size of the workpiece to be assembled;

[0046] In specific implementation, the workpiece to be assembled is the parts that need to be installed inside the oil supply component shell 101 of the oil supply component 100, specifically including the first copper gasket 102, the throttling nozzle 103, the second copper gasket 104 and the filter screen (i.e., the atomizing screen) 105.

[0047] It should be noted that the oil supply assembly 100 is specifically an oil supply assembly in an existing diesel engine flame intake heater.

[0048] In the present invention, in a specific implementation, the center position of the base 1 is provided with vertically distributed internal threaded holes;

[0049] The lower end of the top rod 2 is circumferentially provided with an external thread;

[0050] The internal threaded hole of the base 1 is fixedly connected to the lower end of the top rod 2 by thread.

[0051] In the present invention, in a specific implementation, the inner wall around the lower portion of the connecting sleeve 3 has circumferentially distributed internal threads;

[0052] The upper portion of the plug cover 6 is provided with external threads around the outer wall thereof;

[0053] The internal threads on the inner walls around the lower portion of the connecting sleeve 3 are fixedly connected to the external threads on the blocking cover 6 .

[0054] In the present invention, in a specific implementation, a sliding guide sleeve limiting platform 401 is provided around the lower part of the sliding guide sleeve 4;

[0055] A vertically distributed central through hole is provided on the top of the connecting sleeve 3 at a position corresponding to the sliding guide sleeve 4;

[0056] The upper portion of the sliding guide sleeve 4 vertically passes through the central through hole of the connecting sleeve 3;

[0057] The top inner side wall of the connecting sleeve 3 abuts against the top surface of the sliding guide sleeve limiting platform 401 (ie, they are in close contact).

[0058] In a specific implementation, the spring 5 is a spiral spring;

[0059] A spring limiting platform 202 is provided around the outer side of the push rod 2 above the push rod limiting platform 201;

[0060] The upper and lower ends of the spring 5 are respectively sleeved on the lower end of the sliding guide sleeve 4 and the spring limit platform 202 of the push rod 2;

[0061] Furthermore, the sliding guide sleeve limit platform 401 is used to abut against (ie, be in tight contact with) the top inner side wall of the connecting sleeve 3 under the elastic force of the spring 5 .

[0062] In the present invention, in a specific implementation, the workpiece assembly device provided by the present invention further includes a hexagonal wrench (such as a T-shaped hexagonal wrench);

[0063] The hexagonal wrench is used to insert a compression screw 106 into the housing inner hole 1010 of the oil supply assembly housing 101 and tighten it.

[0064] In order to more clearly understand the technical solution of the present invention, the assembly process of the workpiece assembly device provided by the present invention is described below.

[0065] First, place the threaded end of the upper part of the plug cover 6 upwards, and insert it upwards from the threaded end of the lower part of the push rod 2;

[0066] Then, install the threaded end of the lower part of the top rod 2 on the base 1;

[0067] Then, insert the spring 5 and the sliding guide sleeve 5 into the upper outer side of the push rod 2 in sequence;

[0068] Then, insert the connecting sleeve 3 into the outer side of the upper part of the sliding guide sleeve 5;

[0069] Then, the inner wall around the lower part of the connecting sleeve 3 and the threaded end of the upper part of the blocking cover 6 are screwed together to complete the assembly of the device.

[0070] In order to more clearly understand the technical solution of the present invention, the following describes the assembly process of parts of the present invention in conjunction with specific embodiments.

[0071] In this embodiment, the workpiece to be assembled is a part that needs to be installed inside the shell inner hole 1010 of the oil supply component shell 101, specifically including four parts: a second copper gasket 104, a throttling nozzle 103, a first copper gasket 102, and a filter 105; in specific implementation, the aperture of the hole section at one end of the shell inner hole 1010 is smaller than the aperture of the hole section at the other end for placing the part, and is larger than the outer diameter of the part to be assembled, for example, the gap between the outer diameter of the part to be assembled is 0.1 to 0.2 mm.

[0072] See also Figures 7 to 9 As shown, the specific assembly process is as follows:

[0073] First, place the top rod 2 of the device upwards and place it properly;

[0074] Then, press down the connecting sleeve 3 to drive the sliding guide sleeve 4 to move downward relative to the top rod 1 until the top surface of the sliding guide sleeve 4 is flush with the top surface of the top rod 1;

[0075] Then, the staff member uses tweezers to pick up the second copper gasket 104 and places it on the top surface of the ejector pin 1. The staff member gradually reduces the downward pressure on the connecting sleeve 3, so that the sliding guide sleeve 4 gradually moves upward relative to the ejector pin 1 under the elastic force of the spring 5. As a result, the part receiving hole 402 of the sliding guide sleeve 4 gradually exposes part of the space due to the upward movement, which is just enough to accommodate the second copper gasket 104 (i.e., the second copper gasket 104 falls into the part receiving hole 402 of the sliding guide sleeve 4).

[0076] Then, the staff member uses tweezers to pick up the throttling nozzle 103 and places it on the second copper washer 104. The staff member then continues to reduce the downward pressure on the connecting sleeve 3, causing the sliding guide sleeve 4 to gradually move upward relative to the ejector pin 1. As a result of the upward movement, the exposed space of the parts receiving hole 402 of the sliding guide sleeve 4 is further increased, thereby being able to accommodate the throttling nozzle 103 (at this time, the second copper washer 104 and the throttling nozzle 103 both fall into the parts receiving hole 402 of the sliding guide sleeve 4).

[0077] Then, the staff member uses tweezers to pick up the first copper gasket 102 and places it on the throttle nozzle 103. The downward pressure on the connecting sleeve 3 is further reduced, so that the sliding guide sleeve 4 gradually moves upward relative to the push rod 1. As a result of the upward movement, the space exposed in the parts receiving hole 402 of the sliding guide sleeve 4 is further increased, so that the first copper gasket 102 can be accommodated again (at this time, the second copper gasket 104, the throttle nozzle 103, and the first copper gasket 102 all fall into the parts receiving hole 402 of the sliding guide sleeve 4).

[0078] Next, the staff member uses tweezers to pick up the filter 105 and places it on the first copper gasket 102. The downward pressure on the connecting sleeve 3 is further reduced, causing the sliding guide sleeve 4 to gradually move upward relative to the push rod 1. As a result of the upward movement, the space exposed in the parts receiving hole 402 of the sliding guide sleeve 4 is further increased, thereby being able to accommodate the filter 105 (at this time, the second copper gasket 104, the throttling nozzle 103, the first copper gasket 102, and the filter 105 all fall into the parts receiving hole 402 of the sliding guide sleeve 4).

[0079] Then, completely loosen the sliding guide sleeve 4 without pressing it down. At this time, all the parts to be assembled (the second copper gasket 104, the throttling nozzle 103, the first copper gasket 102 and the filter screen 105) are naturally accommodated in the part accommodating hole 402 of the sliding guide sleeve 4.

[0080] Then, see Figure 7 As shown, the assembly device of the present invention, which has accommodated all the parts to be assembled, is placed below the housing inner hole 1010 at the center of the oil supply assembly housing 101 to be installed, and the housing inner hole 1010 at the center of the oil supply assembly housing 101 is aligned with the sliding guide sleeve 4, and then the sliding guide sleeve 4 is inserted into the housing inner hole 1010 of the oil supply assembly housing 101;

[0081] Then, by pushing the oil supply assembly housing 101 downward, the bottom of the oil supply assembly housing 101 (specifically, the housing portion outside the bottom of the housing inner hole 1010) presses the connecting sleeve 3 downward, so that the sliding guide sleeve 4 moves downward relative to the push rod 1, and the sliding guide sleeve 4 gradually extends upward into the housing inner hole 1010 (which is beneficial for guiding the parts to be assembled). At this time, the push rod 1 is pushed upward due to the downward pressure, and the push rod 2 is sent into the housing inner hole 1010 of the oil supply assembly housing under the guidance of the sliding guide sleeve 4, so that the multiple parts placed above the push rod 1 are gradually sent upward into the housing inner hole 1010 and placed upward to the top, completing the assembly operation of these parts;

[0082] Finally, maintain this state (i.e., the push rod continues to push each part upward in sequence), then invert or lay the device of the present invention together with the oil supply assembly housing with the parts placed therein, and then withdraw the device of the present invention. After withdrawing the oil supply assembly housing 101 from the device of the present invention, screw the compression screw 106 into the inner hole 1010 of the housing to complete the assembly of the oil supply assembly. Figure 8 、 Figure 9 shown.

[0083] It should be noted that, for the present invention, after the actual assembly is completed, the entire device and the oil supply component housing with the parts placed therein are placed flat or inverted, and then the device of the present invention is removed to ensure that the parts inside the oil supply component housing will not fall out.

[0084] Specifically, the staff can use a T-shaped hexagonal wrench to insert the clamping screw 106 into the housing inner hole 1010 of the oil supply assembly housing 101 and tighten it. Among them, the middle section of the housing inner hole 1010 is provided with a corresponding internal thread, which is connected to the external thread on the clamping screw 106.

[0085] It should be noted that thread sealant is applied to the compression screw 106 to seal the space of the threaded portion. The middle opening of the compression screw 106 allows diesel to be ejected outwards from the middle channel of the assembly part when pressurized.

[0086] For the present invention, it should be noted that the center positions of the first copper gasket 102, the throttling nozzle 103, the second copper gasket 104 and the tightening screw 106 all have a central through hole running vertically therethrough, and these through holes are arranged correspondingly and are located on the same central axis; a plurality of filter mesh holes are evenly distributed on the filter mesh 105.

[0087] It should be noted that the present invention utilizes the sliding guide sleeve 4 to constrain the parts to be assembled, and utilizes the push rod 2 to send them into the shell inner hole 1010 of the oil supply component shell under the guidance of the sliding guide sleeve 4. After the assembly is in place, this state is maintained (that is, the push rod continues to support each part in turn), and then the device of the present invention and the oil supply component shell with the parts placed are inverted or laid flat at the same time, and then the device of the present invention is withdrawn. At this time, the sliding guide sleeve 4 is reset under the action of the spring 5 and waits for the next assembly.

[0088] Specifically, the device of the present invention can be designed with a sliding guide sleeve 4 according to the parts to be assembled in the oil supply assembly, and the parts can be placed in the sliding guide sleeve 4 in advance according to the assembly sequence. Then, the device is used to feed the parts into the housing inner hole 1010 of the oil supply assembly housing: at this time, the spring 5 is compressed, and the push rod 2 pushes the parts into the housing inner hole 1010 of the oil supply assembly housing to complete the feeding. After the action is completed, the device of the present invention is withdrawn, and the connecting sleeve 3 and the sliding guide sleeve 4 are reset under the elastic force of the spring 5.

[0089] It should be noted that the present invention is an assembly device developed to improve the assembly process of the fuel supply component in the production of the flame intake heater, increase production efficiency and reduce production costs.

[0090] It should be noted that, at present, because the inner hole of the oil supply component (the inner hole 1010 of the shell of the oil supply component shell) is small, there are no suitable tools to use when placing thin and small parts inside it, and they cannot be placed in place smoothly. In addition, the thin parts are prone to tipping over and getting stuck during the assembly process, which leads to assembly failure.

[0091] Compared with the prior art, by using the device of the present invention, the parts to be assembled are positioned and constrained in advance by the sliding guide sleeve, so that they can be installed smoothly, the assembly requirements can be met, and the production efficiency is greatly improved.

[0092] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A workpiece assembly device, characterized in that: It comprises a base (1), a push rod (2), a connecting sleeve (3), a sliding guide sleeve (4), a spring (5) and a blocking cover (6); A top rod (2) is vertically arranged at the center of the base (1); A push rod limiting platform (201) is provided around the upper part of the push rod (2); A blocking cover (6) is sleeved on the outer side of the push rod (2) below the push rod limiting platform (201); The outer side of the push rod (2) above the push rod limiting platform (201) is covered with a spring (5) and a sliding guide sleeve (4) in sequence from bottom to top; The center of the sliding guide sleeve (4) has a parts receiving hole (402) vertically extending therethrough. The upper portion of the ejector rod (2) is inserted upward into the part receiving hole (402); Wherein, a hollow connecting sleeve (3) is sleeved on the circumferential outer side of the sliding guide sleeve (4); The inner walls around the lower portion of the connecting sleeve (3) are fixedly connected to the blocking cover (6) by means of threads.

2. The workpiece assembly device according to claim 1, wherein: The shape and size of the part receiving hole (402) correspond to the shape and size of the workpiece to be assembled.

3. The workpiece assembly device according to claim 2, wherein: The workpiece to be assembled is a part that needs to be installed inside the oil supply component housing (101), including a second copper gasket (104), a throttling nozzle (103), a first copper gasket (102) and a filter (105).

4. The workpiece assembly device according to claim 1, wherein: The center position of the base (1) is provided with vertically distributed internal threaded holes; The lower end of the push rod (2) is circumferentially provided with an external thread; The internal threaded hole of the base (1) is fixedly connected to the lower end of the top rod (2) by thread.

5. The workpiece assembly device according to claim 1, wherein: The inner wall around the lower part of the connecting sleeve (3) has internal threads distributed around it; External threads are provided around the outer wall of the upper portion of the blocking cover (6); The internal threads on the inner walls around the lower portion of the connecting sleeve (3) are fixedly connected to the external threads on the blocking cover (6).

6. The workpiece assembly device according to claim 1, wherein: A sliding guide sleeve limiting platform (401) is provided around the lower part of the sliding guide sleeve (4); A vertically distributed central through hole is provided on the top of the connecting sleeve (3) at a position corresponding to the sliding guide sleeve (4); The upper portion of the sliding guide sleeve (4) vertically passes through the central through hole of the connecting sleeve (3); The top inner side wall of the connecting sleeve (3) abuts against the top surface of the sliding guide sleeve limiting platform (401).

7. The workpiece assembly device according to claim 6, wherein: A spring limiting platform (202) is provided around the top rod (2) at the outer side of the top rod limiting platform (201); The upper and lower ends of the spring (5) are respectively sleeved on the lower end of the sliding guide sleeve (4) and the spring limiting platform (202) of the push rod (2).

8. The workpiece assembly device according to claim 1, wherein: The sliding guide sleeve limiting platform (401) is used to abut against the top inner side wall of the connecting sleeve (3) under the elastic force of the spring (5).

9. The workpiece assembly device according to any one of claims 1 to 8, characterized in that: The spring (5) is a spiral spring.

10. The workpiece assembly device according to any one of claims 1 to 8, characterized in that: An Allen wrench is also included; The hexagonal wrench is used to insert a compression screw (106) into the housing inner hole (1010) of the oil supply assembly housing (101) and tighten it.

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