Connecting rod copper bush press fitting device

Abstract

The utility model discloses a press-fitting device for a connecting rod copper bush. The press-fitting device comprises a rack, the upper press-fitting assembly comprises a pressing plate; the lower press-fitting assembly comprises a press-fitting groove, a fixing cylinder, a positioning shaft, a base plate and a spring, the press-fitting groove is formed in the bottom plate, the fixing cylinder is embedded and inserted in the press-fitting groove and fixedly connected with the bottom plate, a limiting ring is horizontally arranged on an upper end opening of the fixing cylinder along the inner wall, the spring is vertically arranged in the fixing cylinder, and the lower end of the spring is fixedly connected with the bottom plate; the positioning shaft comprises a connecting plate and a mandrel, the connecting plate is located between the spring and the limiting ring, the upper end of the spring abuts against the lower end face of the connecting plate, the upper end of the mandrel extends to the position above the upper end face of the fixing cylinder, and the height of the part, located above the upper end face of the fixing cylinder, of the mandrel is consistent with the depth of a small-end hole of the connecting rod to be pressed. The base plate is fixed to the top face of the other side of the bottom plate, and the connecting shaft, the mandrel and the fixing cylinder are coaxially arranged. The press-fitting quality of the connecting rod copper bush is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting rod copper bushing pressing, in particular to a connecting rod copper bushing pressing device. Background Art

[0002] At present, the existing connecting rod copper bushing pressing equipment needs to use guide posts to connect the upper template and the lower template. The pressing principle of the equipment is as follows: install the copper bushing on the upper punch, then fix it with steel balls, position the copper bushing through the positioning block arranged on the bottom plate. The upper punch and the positioning block are coaxially arranged, and the positioning block is reset by the spring below the positioning block. When pressing, the copper bushing is pressed into the small head hole of the connecting rod by the cylinder. The disadvantages of the existing connecting rod copper bushing pressing equipment are as follows: the perpendicularity requirement of the upper punch and the backing plate, and the accuracy of the coaxiality of the upper punch and the positioning block is not easy to be regularly detected, resulting in the situation that the copper bushing is pressed obliquely or offset in position when pressed into the bottom hole of the connecting rod, which has an unstable impact on the requirement of the fitting degree of the connecting rod copper bushing pressing, resulting in the situation that the quality cannot be improved.

[0003] Therefore, a connecting rod copper bushing pressing device is developed to solve the above problems. Summary of the Utility Model

[0004] The utility model provides a connecting rod copper bushing pressing device to solve the problems that the existing connecting rod copper bushing pressing equipment will have the problems of oblique or offset position when the copper bushing is pressed into the bottom hole of the connecting rod.

[0005] The utility model realizes the above purpose through the following technical solutions:

[0006] A frame, the frame includes a bracket, a pressing arm and a bottom plate. The bracket is arranged on one side of the bottom plate. The pressing arm is horizontally arranged above the bottom plate, and one end of the pressing arm is connected to the top end of the bracket;

[0007] An upper pressing assembly, the upper pressing assembly includes a cylinder, a connecting shaft and a pressing plate. The cylinder is arranged at the bottom of the other end of the pressing arm. The lower end of the cylinder is connected to the upper end of the connecting shaft. The upper end surface of the pressing plate is connected to the lower end of the connecting shaft and is horizontally arranged;

[0008] The downward pressing and mounting assembly, the downward pressing and mounting assembly includes a pressing groove, a fixing cylinder, a positioning shaft, a backing plate and a spring. The pressing groove is arranged on the bottom plate. The fixing cylinder is inserted into the pressing groove and fixedly connected with the bottom plate. A limiting ring is horizontally arranged along the inner wall of the upper port of the fixing cylinder. The spring is vertically arranged in the fixing cylinder. The lower end of the spring is fixedly connected with the bottom plate. The positioning shaft includes a connecting plate and a core shaft. The connecting plate is located between the spring and the limiting ring. The upper end of the spring abuts against the lower end surface of the connecting plate. The upper end of the core shaft extends above the upper end surface of the fixing cylinder. The height of the part of the core shaft above the upper end surface of the fixing cylinder is consistent with the hole depth of the small head hole of the connecting rod to be pressed. The backing plate is fixed on the top surface of the other side of the bottom plate. The connecting shaft, the core shaft and the fixing cylinder are coaxially arranged.

[0009] Specifically, a spring seat is horizontally arranged at the lower end port of the fixing cylinder. The spring seat is connected with the lower end of the spring.

[0010] Specifically, the spring seat is a circular plate. The outer circle of the circular plate is fixedly connected with the lower end surface of the fixing cylinder through a fixing pin.

[0011] Specifically, a shoulder is horizontally arranged around the upper port of the fixing cylinder. The lower end surface of the shoulder abuts against the upper end surface of the bottom plate. The shoulder is connected with the bottom plate through a fixing pin.

[0012] Specifically, the backing plate is fixed on the bottom plate through a positioning pin and a nut.

[0013] Preferably, the backing plate is a circular backing plate.

[0014] Further, the positioning shaft further includes a guide rod. The guide rod is vertically inserted into the spring. The upper end surface of the guide rod is connected with the lower end surface of the connecting plate.

[0015] Further, limiting grooves are opened at both the front and rear sides of the backing plate on the bottom plate. Limiting plates are detachably installed in the limiting grooves. The upper ends of the limiting plates are arranged higher than the upper end surface of the bottom plate.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The connecting rod copper bushing pressing device proposed by the present utility model solves the problems that the copper bushing will be pressed obliquely and out of position when being pressed into the bottom hole of the connecting rod, making the pressing fit of the connecting rod copper bushing better and improving the pressing quality of the connecting rod copper bushing. Description of the Drawings

[0018] Figure 1 It is the front view of the connecting rod copper bushing pressing device in the embodiment of the present application;

[0019] Figure 2 is Figure 1 a schematic enlarged view of the structure of A in

[0020] Figure 3 a top view of the connecting rod copper bushing pressing device in the embodiment of the present application;

[0021] Figure 4 a top view of the bottom plate in the embodiment of the present application;

[0022] Figure 5 a side view of the bottom plate in the embodiment of the present application.

[0023] In the figure: 1 - bracket; 2 - pressing arm; 210 - cylinder; 3 - bottom plate; 4 - connecting shaft; 5 - pressing plate; 6 - guide ring; 7 - backing plate; 8 - mandrel; 9 - connecting plate; 10 - guide rod; 11 - fixed cylinder; 110 - limiting ring; 12 - spring; 13 - spring seat; 14 - connecting rod; 15 - pressing groove; 16 - limiting groove; 17 - copper bushing; 18 - small head hole. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model 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 construed as a limitation to the present utility model.

[0028] In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, terms such as "set", "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The following will describe in detail the specific implementation manners of the present utility model with reference to the drawings.

[0031] As Figure 1 shown, a connecting rod copper bushing press-fitting device includes:

[0032] A frame, the frame includes a bracket 1, a pressing arm 2 and a bottom plate 3. The bracket 1 is arranged on one side of the bottom plate 3, the pressing arm 2 is horizontally arranged above the bottom plate 3, and one end of the pressing arm 2 is connected to the top end of the bracket 1;

[0033] An upper press-fitting assembly, the upper press-fitting assembly includes a cylinder 210, a connecting shaft 4, a pressing plate 5 and a guide ring 6. The cylinder 210 is arranged at the bottom of the other end of the pressing arm 2, the lower end of the cylinder 210 is connected to the upper end of the connecting shaft 4, the upper end surface of the pressing plate 5 is connected to the lower end of the connecting shaft 4 and is horizontally arranged, and the guide ring 6 is arranged on the lower end surface of the pressing plate 5;

[0034] Combined with Figure 1 and Figure 2As shown in the figure, a connecting rod copper bushing press-fitting device further includes a lower press-fitting assembly. The lower press-fitting assembly includes a press-fitting groove 15, a fixed cylinder 11, a positioning shaft, a backing plate 7, and a spring 12. The press-fitting groove 15 is provided on the bottom plate 3. The fixed cylinder 11 is inserted into the press-fitting groove 15 and fixedly connected to the bottom plate 3. A limiting ring 110 is horizontally arranged along the inner wall of the upper port of the fixed cylinder 11. The spring 12 is vertically arranged in the fixed cylinder 11. The lower end of the spring 12 is fixedly connected to the bottom plate 3. The positioning shaft includes a connecting plate 9 and a core shaft 8. The connecting plate 9 is located between the spring 12 and the limiting ring 110. The upper end of the spring 12 abuts against the lower end surface of the connecting plate 9. The upper end of the core shaft 8 extends above the upper end surface of the fixed cylinder 11. The backing plate 7 is fixed to the top surface of the other side of the bottom plate 3. The connecting shaft 4, the guide ring 6, the core shaft 8, and the fixed cylinder 11 are coaxially arranged.

[0035] As Figure 2 shown, in some embodiments, a spring seat 13 is horizontally provided at the lower end port of the fixed cylinder 11. The spring seat 13 is connected to the lower end of the spring 12. Thus, the spring seat and the fixed cylinder 11 are integrated, which is convenient for installation.

[0036] As Figure 2 shown, in some embodiments, the spring seat 13 is a circular plate. The outer circle of the circular plate is fixedly connected to the lower end surface of the fixed cylinder 11 through a fixing pin.

[0037] As Figure 2 shown, in some embodiments, a shoulder is horizontally provided around the upper port of the fixed cylinder 11. The lower end surface of the shoulder abuts against the upper end surface of the bottom plate 3. The shoulder is connected to the bottom plate 3 through a fixing pin.

[0038] In some embodiments, preferably, the backing plate 7 is fixed to the bottom plate 3 through a positioning pin and a nut.

[0039] In some embodiments, preferably, the backing plate 7 is a circular backing plate 7.

[0040] As Figure 2 shown, in some embodiments, the fixed cylinder 11 further includes a guide rod 10. The guide rod 10 is vertically inserted into the spring 12. The upper end surface of the guide rod 10 is connected to the lower end surface of the connecting plate 9. Thus, it plays a guiding role in the up and down movement of the fixed cylinder 11.

[0041] As Figure 4 and Figure 5As shown, in some embodiments, limiting grooves 16 are formed on the front and rear sides of the backing plate 3 where the cushion plate 7 is located. A limiting plate is detachably installed in the limiting groove 16, and the upper end of the limiting plate is higher than the upper end surface of the backing plate 3. Thus, the large end of the connecting rod is limited.

[0042] As Figure 4 shown, preferably, a press-fitting groove 15 is provided at one end of the backing plate, and mounting hole positions for four fixing pins are provided in the four directions of front, rear, left, and right of the press-fitting groove 15, thereby being used to fix the shoulder of the fixed cylinder 11. At the other end of the backing plate, a mounting hole position for one fixing pin is provided for mounting the cushion plate 7.

[0043] As Figures 1 - 3 shown, when this embodiment is applied, the small-end hole 18 of the connecting rod 14 is sleeved on the mandrel 8. The height of the part of the mandrel 8 above the upper end surface of the fixed cylinder 11 is the same as the hole depth of the small-end hole 18 of the connecting rod 14 to be press-fitted. One end of the large end of the connecting rod 14 is placed on the cushion plate 7, and a limiting plate is installed in the limiting groove 16 to limit one end of the large end of the connecting rod 14. The copper sleeve 17 is placed on the upper end surface of the mandrel 8, and the copper sleeve 17 is adjusted to be coaxially arranged with the mandrel 8. Then, the air cylinder 210 is started to make the pressing plate 3 press the copper sleeve 17 downward. The inner diameter of the guide ring 6 is slightly larger than the outer diameter of the copper sleeve 17, thereby being able to play a guiding role during the press-fitting process. Then, the copper sleeve 17 is pressed into the inside of the small-end hole 18, and the copper sleeve 17 presses the positioning shaft downward into the press-fitting groove 15, completing the press-fitting of the connecting rod 14 and the copper sleeve 17. After removing the press-fitted connecting rod copper sleeve, the next press-fitting is carried out. At this time, the spring 12 resets, thereby resetting the positioning shaft, and the limiting ring 110 plays a limiting role on the positioning shaft. During this process, the copper sleeve 17 and the mandrel 8 can be quickly adjusted to be coaxial. When the guide ring 6, the connecting shaft 4, the guide ring 6, the mandrel 8, and the fixed cylinder 11 are coaxially arranged, it can be avoided that the copper sleeve is pressed obliquely or offset in position when being pressed into the bottom hole of the connecting rod, resulting in a better press-fitting degree of the connecting rod copper sleeve and improving the press-fitting quality of the connecting rod copper sleeve.

[0044] The connecting rod copper sleeve press-fitting device proposed by the present utility model solves the problems that the copper sleeve is pressed obliquely or offset in position when being pressed into the bottom hole of the connecting rod, resulting in a better press-fitting degree of the connecting rod copper sleeve and improving the press-fitting quality of the connecting rod copper sleeve.

[0045] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A connecting rod copper sleeve press-fitting device, characterized in that: include: A frame, the frame comprising a bracket (1), a pressure arm (2) and a bottom plate (3), the bracket (1) being arranged on one side of the bottom plate (3), the pressure arm (2) being arranged transversely above the bottom plate (3), and one end of the pressure arm (2) being connected to the top end of the bracket (1); An upper press assembly, the upper press assembly comprising a cylinder (210), a connecting shaft (4), a pressing plate (5) and a guide ring (6), the cylinder (210) being arranged at the bottom of the other end of the pressing arm (2), the lower end of the cylinder (210) being connected to the upper end of the connecting shaft (4), the upper end surface of the pressing plate (5) being connected to the lower end of the connecting shaft (4) and being arranged transversely, and the guide ring (6) being arranged on the lower end surface of the pressing plate (5); A lower press-fitting assembly, the lower press-fitting assembly comprising a press-fitting groove (15), a fixing cylinder (11), a positioning shaft, a backing plate (7) and a spring (12); the press-fitting groove (15) is arranged on the bottom plate (3); the fixing cylinder (11) is inserted into the press-fitting groove (15) and is fixedly connected to the bottom plate (3); a limiting ring (110) is horizontally provided at the upper end of the fixing cylinder (11) along the inner wall; the spring (12) is vertically arranged in the fixing cylinder (11); the lower end of the spring (12) is aligned with the bottom plate (3); 3) fixed connection, the positioning shaft comprises a connecting plate (9) and a core shaft (8), the connecting plate (9) is located between the spring (12) and the limiting ring (110), the upper end of the spring (12) is abutted against the lower end surface of the connecting plate (9), the upper end of the core shaft (8) extends above the upper end surface of the fixed cylinder (11), the pad (7) is fixed to the top surface of the other side of the bottom plate (3), and the connecting shaft (4), the guide ring (6), the core shaft (8) and the fixed cylinder (11) are coaxially arranged.

2. A connecting rod copper sleeve press-fitting device according to claim 1, characterized in that: A spring seat (13) is horizontally disposed at the lower end of the fixing cylinder (11), and the spring seat (13) is connected to the lower end of the spring (12).

3. A connecting rod copper sleeve press-fitting device according to claim 2, characterized in that: The spring seat (13) is a circular plate, and the outer ring of the circular plate is fixedly connected to the lower end surface of the fixed cylinder (11) via a fixing pin.

4. A connecting rod copper sleeve press-fitting device according to claim 1, characterized in that: A shaft shoulder is horizontally provided around the upper end of the fixed cylinder (11), the lower end surface of the shaft shoulder is butted against the upper end surface of the bottom plate (3), and the shaft shoulder is connected to the bottom plate (3) via a fixing pin.

5. A connecting rod copper sleeve press-fitting device according to claim 1, characterized in that: The backing plate (7) is fixed on the base plate (3) via positioning pins and nuts.

6. A connecting rod copper sleeve press-fitting device according to claim 5, characterized in that: The pad (7) is a circular pad.

7. A connecting rod copper sleeve press-fitting device according to claim 1, characterized in that: The positioning shaft further comprises a guide rod (10), the guide rod (10) being vertically inserted into the spring (12), the upper end surface of the guide rod (10) being connected to the lower end surface of the connecting plate (9).

8. A connecting rod copper sleeve press-fitting device according to claim 1, characterized in that: The bottom plate (3) is provided with limit grooves (16) at both the front and rear sides of the pad (7), and a limit plate is detachably mounted in the limit groove (16), wherein the upper end of the limit plate is arranged higher than the upper end surface of the bottom plate (3).

Images