An assembly device for a workpiece

Abstract

This utility model discloses a workpiece assembly device, including a base, a push rod, a connecting sleeve, a sliding guide sleeve, a spring, and a plug. A push rod is vertically positioned at the center of the base. A push rod limiting platform is arranged around the upper part of the push rod. A plug is fitted onto the outside of the push rod below the pushing rod limiting platform. A spring and a sliding guide sleeve are sequentially fitted onto the outside of the push rod above the pushing rod limiting platform, from bottom to top. The sliding guide sleeve has a part receiving hole at its center. The upper part of the push rod is inserted upwards into the part receiving hole. A hollow connecting sleeve is fitted around the circumferential outer side of the sliding guide sleeve. The lower inner wall of the connecting sleeve is threadedly fixed to the plug. This utility model is scientifically designed and can conveniently and controllably feed internal parts (such as copper gaskets) into the oil supply assembly housing for assembly, significantly improving the assembly efficiency of the oil supply assembly and reducing the labor intensity of workers and overall production costs.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to an assembly device for a workpiece, which is a rapid assembly device for fuel supply component parts in a diesel engine flame intake heater. Background Technology

[0002] In high-altitude, low-temperature environments, diesel engines face difficulties in cold starting. To achieve a high first-time ignition success rate, a cold-start flame intake heater is required. The flame intake heater is a crucial component for ensuring reliable cold-start operation of diesel engines.

[0003] The flame intake heater is installed inside the engine intercooler. When the engine starts, the intake heater starts working and sprays out a high-temperature flame to heat the surrounding air temperature, achieving the effect of "warming up" the engine cylinders, making the engine run more smoothly during cold starts and improving its responsiveness.

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

[0005] During the production and assembly of the fuel supply assembly, due to the small size of its internal parts (such as copper gaskets), it is difficult to clamp the internal parts of the fuel supply assembly when inserting them into the inner hole of the fuel supply assembly housing. As a result, they often slip off, and when they slip off, they tend to flip from a flat position to a vertical position, causing them to get stuck in the middle of the inner wall of the fuel supply assembly housing. Therefore, in order to assemble the internal parts of the fuel supply assembly, repeated attempts and corrections are required, which not only significantly increases the labor intensity of the workers, 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-mentioned technical problems. Utility Model Content

[0007] The purpose of this utility model is to provide a workpiece assembly device to address the technical deficiencies of existing technologies.

[0008] Therefore, this utility model provides a workpiece assembly device, which includes a base, a push rod, a connecting sleeve, a sliding guide sleeve, a spring, and a plug.

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

[0010] A top rod limiting platform is provided around the upper part of the top rod;

[0011] A cap is fitted on the outside of the push rod, which is located below the push rod limiting platform;

[0012] On the outer side of the push rod above the push rod limiting platform, a spring and a sliding guide sleeve are sequentially fitted from bottom to top;

[0013] The sliding guide sleeve has vertically distributed part receiving holes at its center.

[0014] The upper part of the push rod is inserted upward into the part receiving hole;

[0015] Among them, a hollow connecting sleeve is fitted on the outer circumferential side of the sliding guide sleeve;

[0016] The inner wall of the lower part of the connecting sleeve is fixedly connected to the plug with threads.

[0017] As can be seen from the technical solution provided by this utility model above, compared with the prior art, this utility model provides a workpiece assembly device with a scientifically designed structure. It can conveniently and controllably send the internal parts of the oil supply assembly (such as, but not limited to, copper gaskets) into the oil supply assembly housing for assembly, significantly improving the assembly efficiency of the oil supply assembly, reducing the labor intensity of workers and the overall production cost, and has significant practical significance. Attached Figure Description

[0018] Figure 1 A cross-sectional view of a workpiece assembly device provided by this utility model;

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

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

[0021] Figure 3a A front view of a push rod in a workpiece assembly device provided by this utility model;

[0022] Figure 3b A top view of a push rod in a workpiece assembly device provided by this utility model;

[0023] Figure 4a A cross-sectional view of a connecting sleeve in a workpiece assembly device provided by this utility model;

[0024] Figure 4b A top view of a connecting sleeve in a workpiece assembly device provided by this utility model;

[0025] Figure 5a A cross-sectional view of a sliding guide sleeve in a workpiece assembly device provided by this utility model;

[0026] Figure 5bA top view of a sliding guide sleeve in a workpiece assembly device provided by this utility model;

[0027] Figure 6 A cross-sectional view of a plug in a workpiece assembly device provided by this utility model;

[0028] Figure 7 A three-dimensional structural diagram of the housing of an oil supply component before parts are assembled by the workpiece assembly device provided by this utility model.

[0029] Figure 8 A cross-sectional view of an oil supply assembly to be assembled for the workpiece assembly device provided by this utility model (a cross-sectional view of the oil supply assembly after parts assembly is completed, that is, a cross-sectional view of the finished oil supply assembly).

[0030] Figure 9 A three-dimensional exploded disassembly diagram of a finished oil supply component;

[0031] In the diagram, 1 is the base; 2 is the top rod; 3 is the connecting sleeve; 4 is the sliding guide sleeve; 6 is the plug; and 100 is the oil supply assembly. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] See Figure 1 , Figures 2a to 2b , Figures 3a to 3b , Figures 4a to 4b , Figures 5a to 5b , Figures 6 to 9 This utility model 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 6.

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

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

[0039] A plug 6 is fitted on the outer side of the push rod 2, which is located below the push rod limiting platform 201;

[0040] On the outer side of the push rod 2 above the push rod limiting platform 201, a spring 5 and a sliding guide sleeve 4 are sequentially fitted from bottom to top;

[0041] Among them, the center position of the sliding guide sleeve 4 has a vertically distributed part receiving hole 402;

[0042] The upper part of the push rod 2 is inserted upward into the part receiving hole 402;

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

[0044] The inner wall of the lower part of the connecting sleeve 3 is threadedly fixed to the plug 6.

[0045] In this utility model, specifically, the shape and size of the part receiving hole 402 correspond to and match the shape and size of the workpiece to be assembled;

[0046] In practice, the workpiece to be assembled is a part that needs to be installed inside the oil supply assembly housing 101 of the oil supply assembly 100, specifically including four parts: 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 fuel supply component 100 is specifically the fuel supply component in the existing diesel engine flame intake heater.

[0048] In this utility model, specifically, the base 1 has vertically distributed internal threaded holes at its center.

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

[0050] The internal threaded hole of the base 1 is threadedly fixed to the lower end of the top rod 2.

[0051] In this utility model, specifically, the lower part of the connecting sleeve 3 has an inner wall with a circumferentially distributed internal thread.

[0052] The upper part of the plug 6 is surrounded by external threads on its outer wall;

[0053] The internal thread on the lower perimeter of the connecting sleeve 3 is fixedly connected to the external thread on the plug 6.

[0054] In this utility model, specifically, a sliding guide sleeve limiting platform 401 is provided around the lower part of the sliding guide sleeve 4;

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

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

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

[0058] In practice, spring 5 is a helical spring;

[0059] A spring limiting platform 202 is arranged around the outside of the position above the top 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 limiting platform 202 of the push rod 2;

[0061] Furthermore, the sliding guide sleeve limiting platform 401 is used to abut against the top inner wall of the connecting sleeve 3 (i.e., to make tight contact) under the elastic force of the spring 5.

[0062] In this utility model, specifically, the workpiece assembly device provided by this utility model also includes an internal hex wrench (e.g., a T-type internal hex wrench);

[0063] An Allen wrench is used to insert and tighten a clamping screw 106 into the housing bore 1010 of the oil supply assembly housing 101.

[0064] To better understand the technical solution of this utility model, the assembly process of the workpiece assembly device provided by this utility model is described below.

[0065] First, place the threaded end of the plug 6 upwards and slide it upwards from the threaded end of the top rod 2.

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

[0067] Then, spring 5 and sliding guide sleeve 5 are successively inserted into the upper outer side of push rod 2;

[0068] Then, the connecting sleeve 3 is fitted onto the upper outer side of the sliding guide sleeve 5;

[0069] Then, screw the inner wall of the lower part of the connecting sleeve 3 and the threaded end of the upper part of the plug 6 together to complete the assembly of the device.

[0070] To better understand the technical solution of this utility model, the assembly process of the parts is described below with reference to specific embodiments.

[0071] In this embodiment, the workpiece to be assembled is a part that needs to be installed inside the inner hole 1010 of the oil supply component housing 101. Specifically, it includes four parts: a second copper gasket 104, a throttling nozzle 103, a first copper gasket 102, and a filter screen 105. In practice, the diameter of one end of the inner hole 1010 is smaller than the diameter of the other end of the inner hole used to insert the part, and larger than the outer diameter of the part to be assembled. For example, the gap between the inner hole and 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 this utility model device upwards and position it properly;

[0074] Then, press down the connecting sleeve 3, causing 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 used tweezers to pick up the second copper pad 104 and place it on the top surface of the push rod 1, gradually reducing the downward pressure on the connecting sleeve 3, so that the sliding guide sleeve 4 gradually moves upward relative to the push rod 1 under the elastic force of the spring 5, so that 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 pad 104 (that is, the second copper pad 104 falls into the part receiving hole 402 of the sliding guide sleeve 4).

[0076] Then, the staff used tweezers to pick up the throttling nozzle 103 and place it on the second copper pad 104. Then, they continued to reduce the downward pressure on the connecting sleeve 3, so that the sliding guide sleeve 4 gradually moved upward relative to the top rod 1. This caused the part receiving hole 402 of the sliding guide sleeve 4 to further increase the exposed space due to the upward movement, so that it could accommodate the throttling nozzle 103 again (at this time, the second copper pad 104 and the throttling nozzle 103 both fell into the part receiving hole 402 of the sliding guide sleeve 4).

[0077] Then, the staff used tweezers to pick up the first copper gasket 102 and place it on the throttling nozzle 103, continuing to reduce the downward pressure on the connecting sleeve 3, so that the sliding guide sleeve 4 gradually moved upward relative to the top rod 1, so that the part receiving hole 402 of the sliding guide sleeve 4 further increased the exposed space due to the upward movement, thus being able to accommodate the first copper gasket 102 again (at this time, the second copper gasket 104, the throttling nozzle 103, and the first copper gasket 102 all fell into the part receiving hole 402 of the sliding guide sleeve 4).

[0078] Next, the staff used tweezers to pick up the filter screen 105 and place it on the first copper pad 102. They continued to reduce the downward pressure on the connecting sleeve 3, causing the sliding guide sleeve 4 to gradually move upward relative to the top rod 1. This caused the part receiving hole 402 of the sliding guide sleeve 4 to further increase the exposed space due to the upward movement, so that it could accommodate the filter screen 105 again. (At this time, the second copper pad 104, the throttling nozzle 103, the first copper pad 102, and the filter screen 105 all fell into the part 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 (second copper gasket 104, throttling nozzle 103, first copper gasket 102, and filter screen 105) will naturally be accommodated in the part receiving hole 402 of the sliding guide sleeve 4.

[0080] Then, see Figure 7As shown, the assembly device of this utility model, which has contained all the parts to be assembled, is placed below the inner hole 1010 of the housing at the center position of the oil supply component housing 101 to be installed, and the inner hole 1010 of the housing at the center position of the oil supply component housing 101 is aligned vertically with the sliding guide sleeve 4. Then the sliding guide sleeve 4 is sent into the inner hole 1010 of the housing of the oil supply component 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 part on the outer periphery of the bottom of the housing inner hole 1010) presses the connecting sleeve 3 downward, causing the sliding guide sleeve 4 to move downward relative to the push rod 1. The sliding guide sleeve 4 gradually extends upward into the housing inner hole 1010 (which is beneficial for guiding the parts that need to be assembled). At this time, due to the downward pressure, the push rod 1 is pushed upward, 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. Thus, multiple parts placed above the push rod 1 are gradually sent upward into the housing inner hole 1010 and placed on top, completing the assembly operation of these parts.

[0082] Finally, maintain this state (i.e., the push rod continues to push each part upwards in sequence), then simultaneously invert or lay flat the device of this invention and the oil supply assembly housing with the parts already inserted, and then remove the device of this invention. After removing the oil supply assembly housing 101 from the device of this invention, screw the clamping screw 106 into the inner hole 1010 of the housing to complete the oil supply assembly assembly. See [link to documentation]. Figure 8 , Figure 9 As shown.

[0083] It should be noted that, for this utility model, after the actual assembly is completed, the entire device and the oil supply component housing with the parts already placed inside are laid flat or upside down before the device of this utility model is removed, which will ensure that the parts inside the oil supply component housing will not fall out.

[0084] In practice, workers can use a T-type Allen wrench to insert the clamping screw 106 into the inner hole 1010 of the oil supply component housing 101 and tighten it. The middle section of the inner hole 1010 has a corresponding internal thread, which connects with the external thread on the clamping screw 106.

[0085] It should be noted that the clamping screw 106 is coated with thread-locking adhesive to seal the space in the threaded portion. The central opening of the clamping screw 106 allows diesel fuel to be ejected outward from the central channel of the assembled part when pressurized.

[0086] It should be noted that the first copper gasket 102, the throttling nozzle 103, the second copper gasket 104, and the clamping screw 106 all have vertically penetrating central through holes at their center positions, and these through holes are correspondingly arranged and located on the same central axis; the filter screen 105 has a plurality of filter screen holes evenly distributed on it.

[0087] It should be noted that this utility model uses the sliding guide sleeve 4 to constrain the parts to be assembled. The push rod 2 is inserted into the inner hole 1010 of the oil supply component housing under the guidance of the sliding guide sleeve 4. After the assembly is in place, this state is maintained (i.e. the push rod continues to hold each part in place in sequence). Then, the device of this utility model and the oil supply component housing with the parts inserted are inverted or laid flat at the same time, and then the device of this utility model is withdrawn. At this time, the sliding guide sleeve 4 is reset under the action of the spring 5, waiting for the next assembly.

[0088] In specific implementation, the device of this utility model can be designed according to the sliding guide sleeve 4 of the parts to be assembled in the oil supply assembly, and the parts are put into the sliding guide sleeve 4 in advance according to the assembly sequence. Then, the device is used to send the parts into the inner hole 1010 of the housing of the oil supply assembly: at this time, the compression spring 5 is required, and the push rod 2 pushes the parts into the inner hole 1010 of the housing of the oil supply assembly to complete the sending. After the action is completed, the device of this utility model 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 this utility model is an assembly device developed to improve the assembly process of the oil supply component in the production of flame air intake heaters, increase production efficiency, and reduce production costs.

[0090] It should be noted that, currently, because the inner hole of the oil supply component (the inner hole 1010 of the oil supply component housing) is small, there are no suitable tools to use when placing thin and small parts inside, making it impossible to place them smoothly. Furthermore, thin parts are prone to tipping over and getting stuck during assembly, which can lead to assembly failure.

[0091] Compared with the existing technology, by using the device of this utility model, the parts to be assembled are positioned and constrained in advance by the sliding guide sleeve, so that they can be installed smoothly, which can meet the assembly requirements and greatly improve the production efficiency.

[0092] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An assembly device for a workpiece, characterized by, It includes a base (1), a top rod (2), a connecting sleeve (3), a sliding guide sleeve (4), a spring (5), and a plug (6); A top rod (2) is vertically installed at the center of the base (1); A top rod limiting platform (201) is provided around the upper part of the top rod (2); A cap (6) is fitted on the outside of the position below the push rod limiting platform (201) of the push rod (2); The top rod (2) is located on the outside of the top rod limiting platform (201), and from bottom to top, a spring (5) and a sliding guide sleeve (4) are successively fitted on it; Among them, the center position of the sliding guide sleeve (4) has a vertically distributed part receiving hole (402); The upper part of the push rod (2) is inserted upward into the part receiving hole (402); Among them, a hollow connecting sleeve (3) is fitted on the outer circumferential side of the sliding guide sleeve (4); The inner wall of the lower part of the connecting sleeve (3) is threadedly fixed to the plug (6).

2. The workpiece assembly device as described in claim 1, characterized in that, The shape and size of the part receiving hole (402) correspond to and match the shape and size of the workpiece to be assembled.

3. The workpiece assembly device as described in claim 2, characterized in that, The workpieces to be assembled are the parts that need to be installed inside the oil supply assembly housing (101), including the second copper gasket (104), the throttle nozzle (103), the first copper gasket (102), and the filter screen (105).

4. The workpiece assembly apparatus as described in claim 1 or 2, characterized in that, The base (1) has vertically distributed internal threaded holes at its center; The lower end of the push rod (2) is provided with an external thread; The internal threaded hole of the base (1) is threadedly fixed to the lower end of the top rod (2).

5. The workpiece assembly device as described in claim 1, characterized in that, The lower part of the connecting sleeve (3) has an inner wall with a circumferentially distributed internal thread; The upper part of the plug (6) is surrounded by external threads on its outer wall; The internal thread on the inner wall of the lower part of the connecting sleeve (3) is fixedly connected to the external thread on the plug (6).

6. The workpiece assembly apparatus as described in claim 1, characterized in that, A sliding guide sleeve limiting platform (401) is provided around the lower part of the sliding guide sleeve (4); The top of the connecting sleeve (3) is provided with vertically distributed central through holes at a position corresponding to the sliding guide sleeve (4); The upper part of the sliding guide sleeve (4) passes vertically through the central through hole of the connecting sleeve (3); The top inner wall of the connecting sleeve (3) abuts against the top surface of the sliding guide sleeve limiting platform (401).

7. The workpiece assembly apparatus as described in claim 6, characterized in that, A spring limiting platform (202) is arranged around the outside of the position above 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 apparatus as described in claim 1, characterized in that, The sliding guide sleeve limiting platform (401) is used to abut against the top inner wall of the connecting sleeve (3) under the elastic force of the spring (5).

9. The assembly apparatus for a workpiece as described in any one of claims 1 to 8, characterized in that, Spring (5) is a helical spring.

10. The assembly apparatus for a workpiece as described in any one of claims 1 to 8, characterized in that, It also includes an Allen wrench; An internal hex wrench is used to insert and tighten a clamping screw (106) into the housing bore (1010) of the oil supply assembly housing (101).

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