Elastic pressing sleeve device for engine connecting rod production

Abstract

The utility model provides an elastic pressing sleeve device for engine connecting rod production, and belongs to the technical field of engine connecting rod production. Comprising a machining table and a supporting frame fixed to the top end of the machining table, pressing sleeve molds are arranged on the two sides of the top end face of the machining table, protruding blocks used for positioning the pressing sleeve molds are symmetrically fixed to the top end of the machining table, positioning grooves are formed in the top ends of the pressing sleeve molds, and a movable frame is adjustably arranged in the supporting frame; an electric push rod is mounted at the top end of the moving frame, and an extrusion plate is mounted at the bottom end of the electric push rod through an elastic telescopic mechanism. After a workpiece is subjected to sleeve pressing, stamping equipment does not need to enter a standby state, the utilization rate and sleeve pressing efficiency of the equipment are improved, the peak time of bush extrusion is shortened, the possibility of damage to a machining table is reduced, sleeve pressing dies with positioning grooves of different sizes are replaced, and the sleeve pressing device is suitable for sleeve pressing machining of engine connecting rod bodies of different models.

Description

Technical Field

[0001] This utility model relates to the field of engine connecting rod manufacturing technology, and in particular to an elastic compression sleeve device for engine connecting rod manufacturing. Background Technology

[0002] The connecting rod is the component that connects the piston and crankshaft, transmitting the force on the piston to the crankshaft and converting the reciprocating motion of the piston into the rotational motion of the crankshaft. The connecting rod body generally consists of three parts: the part that connects to the piston pin is called the small end; the part that connects to the crankshaft is called the big end; and the part connecting the small end and the big end is called the connecting rod body. The small end of the connecting rod is mostly a thin-walled annular structure. To reduce wear between it and the piston pin, a thin-walled bronze bushing is pressed into the small end bore. Holes or grooves are drilled or milled in the small end and the bushing to allow splashed oil to enter and lubricate the mating surfaces of the bushing and the piston pin. The connecting rod body is a long rod that experiences significant stress during operation; to prevent bending deformation, the body must have sufficient rigidity. To avoid stress concentration, the connections between the connecting rod body and the small and big ends are smooth with large arcs.

[0003] Currently, to effectively improve the service life of engine connecting rods and various mechanical parts, connecting rods generally need to be used with bushings. The bushings are installed in the small holes of the connecting rods. In the existing bushing installation process, stamping equipment (such as stamping cylinders, stamping hydraulic cylinders, etc.) is often used to press the bushing into the connecting rod. This process has certain drawbacks: Firstly, when using a stamping machine for pressing, a workpiece needs to be placed on the worktable first. After the workpiece is pressed, it needs to be removed and then another workpiece is placed. This process puts the stamping machine in a standby state, resulting in low utilization of the equipment and affecting the work process to a certain extent. Secondly, the clamping force of the bushing is relatively large during the pressing process, which may damage the worktable. If the lower part of the connecting rod to be pressed is hollow, it will affect the stability of the workpiece placement, thus affecting the accuracy of the workpiece's placement position. The pressing process is limited and cannot well meet the needs of production and processing. Therefore, this application provides an elastic pressing device for engine connecting rod production to meet the needs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an elastic compression sleeve device for the production of engine connecting rods. This solves the problem that after the existing workpiece is compressed, it is necessary to remove the workpiece and place another workpiece. This process will put the stamping equipment in a standby state, resulting in low utilization of the equipment. In addition, the bushing has a relatively large clamping force during the pressing process of the workpiece, which may damage the worktable.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an elastic compression sleeve device for engine connecting rod production, including a processing table and a support frame fixed to the top of the processing table. Compression sleeve molds are provided on both sides of the top surface of the processing table, and protrusions for positioning the compression sleeve molds are symmetrically fixed on the top of the processing table. A positioning groove is provided on the top of the compression sleeve mold. A movable frame is adjustablely provided in the support frame. An electric push rod is installed on the top of the movable frame. An extrusion plate is installed at the bottom of the electric push rod through an elastic telescopic mechanism.

[0006] Optionally, the bottom of the processing table is fixed with legs in a rectangular array, and a storage platform is fixedly installed between the legs.

[0007] Optionally, a lead screw threaded into a movable frame is rotatably mounted in the support frame, and a motor connected to the lead screw is fixed to the side wall of the support frame.

[0008] Optionally, a support plate is embedded and fixed in the support frame, and the top of the support plate corresponds to the movable frame.

[0009] Optionally, the elastic telescopic mechanism includes a fixed rod fixed to the bottom end of the electric push rod and a telescopic rod slidably inserted into the fixed rod, the bottom end of the telescopic rod being fixedly connected to the extrusion plate.

[0010] Optionally, a protruding rod is fixedly installed at the top of the telescopic rod, and a first spring sleeved on the protruding rod is embedded in the fixed rod.

[0011] Optionally, an engine connecting rod body is fitted into the positioning groove, and a bushing is inserted into the cavity on the engine connecting rod body.

[0012] Optionally, both ends of the compression mold are provided with grooves, and the protrusions are fitted into the grooves.

[0013] Optionally, the protrusion is provided at the top of the compression mold, and the side wall of the protrusion is provided with an installation groove.

[0014] Optionally, a second spring and a locking block are respectively provided in the mounting groove, and one end of the locking block extending out of the protrusion is tightly connected to the top surface of the pressure sleeve mold.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects:

[0016] In the above solution, by setting up pressing molds on both sides of the top surface of the processing table, the engine connecting rod body is tightly inserted into the positioning groove at the top of the pressing mold, and the bushing corresponds to the cavity on the engine connecting rod body. The extrusion plate at the bottom of the electric push rod pushes the bushing into the engine connecting rod body. The motor drives the lead screw to rotate forward and backward, causing the moving frame to drive the extrusion plate to reciprocate. The extrusion plate is located above the two pressing molds respectively, so that when one pressing mold is being extruded, the other pressing mold can be used to disassemble and replace the engine connecting rod body. After the workpiece is pressed, there is no need to put the stamping equipment into standby mode, which improves the utilization rate of the equipment and the pressing efficiency.

[0017] By installing a fixed rod at the bottom of the electric push rod, the extrusion plate compresses the first spring and causes elastic deformation when it contacts the bushing. During the deformation process, the pressure of the first spring continues to increase, causing the extrusion plate to continuously increase the extrusion force to press the bushing until the protrusion contactes the inner wall of the mounting rod and reaches the peak value. This reduces the peak time of bushing extrusion and reduces the possibility of damaging the processing table.

[0018] Multiple protrusions are fixed at the top of the machining table. During installation, the protrusions are embedded in the grooves of the compression mold. The second spring in the mounting groove pushes the locking block to protrude at the top of the compression mold, thereby keeping the compression mold fixed at the top of the machining table. The compression mold keeps the bushing stable through the positioning groove. The locking block is squeezed to retract it into the mounting groove to disassemble the compression mold and replace it with a compression mold with a positioning groove of different size. It is suitable for compression processing of connecting rod bodies of different models of engines. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0020] Figure 1 A three-dimensional structural diagram of an elastic compression sleeve device for engine connecting rod production;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the mobile frame;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the compression molding die;

[0023] Figure 4 This is a cross-sectional view of the machining table.

[0024] Attached Figure

[0025] 1. Machining table; 2. Motor; 3. Lead screw; 4. Moving frame; 5. Support plate; 6. Support frame; 7. Positioning groove; 8. Storage platform; 9. Pressing mold; 10. Support leg; 11. Electric push rod; 12. Fixed rod; 13. Telescopic rod; 14. Extrusion plate; 15. First spring; 16. Protruding rod; 17. Bushing; 18. Engine connecting rod body; 19. Groove; 20. Protrusion; 21. Second spring; 22. Locking block; 23. Mounting groove.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0027] The following is a detailed description of an elastic compression sleeve device for engine connecting rod production provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0028] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0029] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0030] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0031] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0032] like Figure 1 and Figure 2 As shown, an embodiment of this utility model provides an elastic compression sleeve device for producing engine connecting rods, including a processing table 1 and a support frame 6 fixed to the top of the processing table 1. Compression sleeve molds 9 are provided on both sides of the top surface of the processing table 1, and protrusions 20 for positioning the compression sleeve molds 9 are symmetrically fixed on the top of the processing table 1. The top of the compression sleeve mold 9 is provided with a positioning groove 7. A movable frame 4 is adjustablely provided in the support frame 6. An electric push rod 11 is installed on the top of the movable frame 4, and an extrusion plate 14 is installed on the bottom of the electric push rod 11 through an elastic telescopic mechanism.

[0033] The bottom of the processing table 1 is fixed with a rectangular array of legs 10. A storage platform 8 is fixedly installed between the multiple legs 10. A screw 3 threaded into the movable frame 4 is rotatably installed in the support frame 6. A motor 2 connected to the screw 3 is fixed to the side wall of the support frame 6. A support plate 5 is embedded in the support frame 6. The top of the support plate 5 corresponds to the movable frame 4. The engine connecting rod body 18 is tightly inserted into the positioning groove 7 at the top of the compression mold 9, and the bushing 17 corresponds to the cavity on the engine connecting rod body 18. The extrusion plate 14 at the bottom of the electric push rod 11 pushes the bushing 17 into the engine connecting rod body 18. The motor 2 drives the screw 3 to rotate forward and backward, causing the movable frame 4 to drive the extrusion plate 14 to reciprocate. The extrusion plate 14 is located above the two compression molds 9 respectively, so that when one compression mold 9 is being extruded, the other compression mold 9 can disassemble and replace the engine connecting rod body 18.

[0034] The elastic telescopic mechanism includes a fixed rod 12 fixed to the bottom end of the electric push rod 11 and a telescopic rod 13 slidably inserted into the fixed rod 12. The bottom end of the telescopic rod 13 is fixedly connected to the extrusion plate 14, and a protruding rod 16 is fixedly installed at the top end of the telescopic rod 13. A first spring 15 is embedded in the fixed rod 12 and sleeved on the protruding rod 16. When the extrusion plate 14 contacts the bushing 17, it compresses the first spring 15 and causes elastic deformation. During the deformation process, the pressure of the first spring 15 continues to increase, causing the extrusion plate 14 to continuously increase the extrusion force to press on the bushing 17 until the protruding rod 16 contacts the inner wall of the mounting rod and reaches the peak value. This reduces the peak time of the bushing 17's extrusion and reduces the possibility of damaging the processing table 1.

[0035] like Figure 3 and Figure 4 As shown, an engine connecting rod body 18 is fitted into the positioning groove 7, and a bushing 17 is inserted into the cavity on the engine connecting rod body 18. Both ends of the pressing mold 9 have grooves 19, and protrusions 20 are fitted into the grooves 19. The protrusions 20 protrude from the top of the pressing mold 9, and the sidewall of the protrusions 20 has an installation groove 23. A second spring 21 and a locking block 22 are respectively installed in the installation groove 23. One end of the locking block 22 extending out of the protrusion 20 is tightly connected to the top surface of the pressing mold 9. When the mold 9 is installed, multiple protrusions 20 are embedded in the groove 19. The second spring 21 in the mounting groove 23 pushes the locking block 22 to protrude from the top of the mold 9, thereby keeping the mold 9 fixed at the top of the processing table 1. The mold 9 keeps the bushing 17 stable through the positioning groove 7. The locking block 22 is squeezed to retract into the mounting groove 23 to disassemble the mold 9 and replace it with a mold 9 with a positioning groove 7 of different size. It is suitable for the pressing and processing of connecting rod bodies 18 of different models of engines.

[0036] The working principle of the technical solution provided by this utility model is as follows:

[0037] During use, when installing the compression mold 9, multiple protrusions 20 are embedded into the groove 19. The second spring 21 in the mounting groove 23 pushes the locking block 22 to protrude from the top of the compression mold 9, thereby fixing the compression mold 9 at the top of the processing table 1. The compression mold 9 stabilizes the bushing 17 through the positioning groove 7. The engine connecting rod body 18 is tightly inserted into the positioning groove 7 at the top of the compression mold 9, and the bushing 17 corresponds to the cavity on the engine connecting rod body 18. The extrusion plate 14 at the bottom of the electric push rod 11 pushes the bushing 17 into the engine connecting rod body 18. The starter motor 2 drives the lead screw 3 to rotate forward and backward, causing the moving frame 4 to drive the extrusion plate 14 to reciprocate. The extrusion plate 14 is located above the two compression molds 9 respectively, so that when one compression mold 9 is being extruded, the other compression mold 9 is being processed. The rod body 18 can be disassembled and replaced. After the workpiece is pressed, the stamping equipment does not need to be put into standby mode, which improves the utilization rate of the equipment and the pressing efficiency. The electric push rod 11 is started to drive the extrusion plate 14 to move downward. When the extrusion plate 14 contacts the bushing 17, it compresses the first spring 15 and causes elastic deformation. During the deformation process, the pressure of the first spring 15 continues to increase, so that the extrusion plate 14 continuously increases the extrusion force to press the bushing 17 until the protrusion 16 contacts the inner wall of the mounting rod and reaches the peak value. This reduces the peak time of the bushing 17 extrusion and reduces the possibility of damaging the processing table 1. When disassembling the pressing mold 9, the extrusion block 22 is used to retract it into the mounting groove 23 to disassemble the pressing mold 9. The pressing mold 9 with different sized positioning grooves 7 is replaced, which is suitable for pressing the connecting rod body 18 of different models of engines.

[0038] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0039] 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. A flexible compression sleeve device for manufacturing engine connecting rods, characterized in that, The device includes a processing table and a support frame fixed to the top of the processing table. Both sides of the top surface of the processing table are provided with pressing molds, and the top of the processing table is symmetrically fixed with protrusions for positioning the pressing molds. The top of the pressing mold is provided with a positioning groove. The support frame is adjustablely provided with a movable frame. The top of the movable frame is equipped with an electric push rod, and the bottom of the electric push rod is equipped with an extrusion plate through an elastic telescopic mechanism.

2. The elastic sleeve device for engine connecting rod production according to claim 1, characterized in that, The bottom of the processing table is fixed with legs in a rectangular array, and a storage platform is fixedly installed between the legs.

3. The elastic compression sleeve device for engine connecting rod production according to claim 1, characterized in that, The support frame is rotatably mounted with a lead screw threaded into the movable frame, and a motor connected to the lead screw is fixed to the side wall of the support frame.

4. The elastic compression sleeve device for engine connecting rod production according to claim 3, characterized in that, A support plate is embedded in the support frame, and the top of the support plate corresponds to the movable frame.

5. The elastic compression sleeve device for engine connecting rod production according to claim 1, characterized in that, The elastic telescopic mechanism includes a fixed rod fixed to the bottom end of the electric push rod and a telescopic rod slidably inserted into the fixed rod, the bottom end of the telescopic rod being fixedly connected to the extrusion plate.

6. The elastic compression sleeve device for engine connecting rod production according to claim 5, characterized in that, A protruding rod is fixedly installed at the top of the telescopic rod, and a first spring is embedded in the fixed rod and sleeved on the protruding rod.

7. The elastic compression sleeve device for engine connecting rod production according to claim 1, characterized in that, An engine connecting rod body is fitted into the positioning groove, and a bushing is inserted into the cavity of the engine connecting rod body.

8. The elastic compression sleeve device for engine connecting rod production according to claim 7, characterized in that, The compression mold has grooves at both ends, and the protrusions are fitted into the grooves.

9. The elastic compression sleeve device for engine connecting rod production according to claim 8, characterized in that, The protrusion is provided at the top of the compression mold, and the side wall of the protrusion is provided with an installation groove.

10. The elastic compression sleeve device for engine connecting rod production according to claim 9, characterized in that, The mounting groove is provided with a second spring and a locking block, and one end of the locking block extending out of the protrusion is tightly connected to the top surface of the pressure sleeve mold.

Images