Press machine oil leakage prevention structure

Abstract

The press machine oil leakage prevention structure comprises a head base for connecting a crankshaft for rotating, an upper die assembly arranged below the head base and connected with the crankshaft through a connecting rod, the upper die assembly reciprocating along a vertical direction above a frame under the drive of the crankshaft to complete a stamping action, an oil return member is further arranged above the head base, a movable hole through which the connecting rod extends and swings is arranged in the middle of the oil return member, and the oil return member is further provided with an oil return groove surrounding the movable hole; the connecting rod is provided with an oil blocking member in the part inside the head base, and the oil blocking member covers the oil return groove. The technical scheme provides a press machine oil leakage prevention structure, through arranging the oil return member and the oil blocking member above the head base and the connecting rod respectively, the leaked oil can be guided into the oil return groove after being collected in the chamber, so that the leaked oil can be protected from flowing onto the upper die assembly or other working components.

Description

Technical Field

[0001] This utility model relates to the technical field of leather press equipment, specifically to an oil leakage prevention structure for presses. Background Technology

[0002] A press, including punch presses and hydraulic presses, is mainly used for processes such as cutting, punching, and blanking. It uses a crankshaft to drive the upper die assembly to move vertically, thereby completing the operation.

[0003] Currently, in some conventional presses, the upper die assembly and the crankshaft are connected by a connecting rod. The connection between the connecting rod and the crankshaft requires sufficient lubrication to ensure the smooth rotation of the crankshaft. However, lubricating grease can leak out in the gap between the connecting rod and the crankshaft and flow onto the upper die assembly with the surface of the connecting rod, which can easily contaminate the workpiece.

[0004] Currently, the only measure to prevent oil leakage is to improve the sealing performance between the crankshaft and connecting rod. However, during long-term operation, some leakage will inevitably occur. Therefore, there is an urgent need for a technical solution to solve the problem of oil leakage in presses. Utility Model Content

[0005] The purpose of this utility model is to provide an oil leakage prevention structure for a press, in order to solve the above-mentioned technical problems. The utility model adopts the following technical solution: The press oil leakage prevention structure includes a headstock connected therein for rotating a crankshaft, an upper die assembly disposed below the headstock and driven by a connecting rod to the crankshaft, the upper die assembly reciprocating vertically on the frame under the drive of the crankshaft to complete the stamping action, the headstock having a hole for the connecting rod to extend out, and an oil return component fixedly installed within the hole, the oil return component having a movable hole in the middle for the connecting rod to extend and swing, and an oil return groove surrounding the movable hole; an oil baffle is provided on the portion of the connecting rod located inside the headstock to block oil leakage from the rotatable connection between the connecting rod and the crankshaft, and the oil baffle covers the oil return groove.

[0006] Furthermore, the headstock is provided with a chamber for the crankshaft to be rotatably connected therein, and the opening of the oil return groove is connected to the chamber, so that the leaking oil located in the chamber flows into the oil return groove.

[0007] Furthermore, the edge of the oil baffle is provided with a baffle extending toward the oil return component, so that the oil baffle is formed with an oil baffle groove with an opening toward the oil return component, and the orthographic projection of the oil baffle groove toward the oil return component covers the oil return component within it.

[0008] Furthermore, an extension plate is formed at the edge of the hole, protruding toward the oil baffle groove and extending into the oil baffle groove, and the extension plate defines the sidewall of the outer side of the oil return groove, so that the oil baffle groove covers the oil baffle groove inside it.

[0009] Furthermore, the bottom of the oil return tank is provided with an oil return port for pipeline connection.

[0010] Furthermore, a baffle plate is formed inside the oil return groove, which is arranged around the movable hole. The baffle plate divides the oil return groove into a first groove and a second groove that are independent of each other. The oil return port is provided with two ports located at the bottom of the first groove and the second groove, respectively.

[0011] Furthermore, the oil baffle is formed with a partition plate that extends into the first groove and the second groove respectively, and the partition plate divides the first groove and the second groove into two parts that are connected at the bottom.

[0012] The beneficial effects of this utility model are as follows: During the operation of the press, the crankshaft rotates under the drive of the drive device (not shown in the figure). The upper die assembly is vertically mounted on the frame through a movable structure. The connecting rod drives the upper die assembly to reciprocate vertically, thereby completing the processing of the workpiece placed on the base. During the above process, the connecting rod can move in the movable hole, thereby driving the upper die assembly to move. At the same time, since the upper end of the connecting rod is rotatably connected to the crankshaft, when the lubricating grease leaks from the rotatable connection between the connecting rod and the crankshaft, it is blocked and restricted by the oil baffle. Under the restriction of the oil baffle, it drips into the chamber and flows into the return oil groove for recycling after accumulation. This protects the leaked grease and prevents it from flowing to other working positions or parts.

[0013] This technical solution provides a press oil leakage prevention structure. By installing an oil return component and an oil baffle on the headstock and connecting rod respectively, the leaking lubricating grease at the rotating connection between the connecting rod and the crankshaft is blocked and guided to the cavity of the headstock. This prevents the leaked lubricating grease from flowing along the surface of the connecting rod onto the upper die assembly. The grease guided into the cavity is collected and flows into the oil return groove for collection. This protects the leaked grease from flowing onto the upper die assembly or other working parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2This is a schematic diagram of the explosive structure of this utility model. Figure 1 .

[0016] Figure 3 This is a schematic diagram of the explosive structure of this utility model. Figure 2 .

[0017] Figure 4 This is a cross-sectional view of the present invention.

[0018] Figure 5 for Figure 4 A magnified view of section A in the image.

[0019] Figure 6 A press for applying this utility model.

[0020] In the diagram: 100-Frame; 110-Headstock; 120-Crankshaft; 130-Upper mold assembly; 140-Connecting rod; 150-Base; 200-Oil return component; 201-Moving hole; 210-Oil return groove; 300-Oil baffle; 111-Cavity; 301-Side flange; 302-Oil baffle groove; 112-Extension plate; 211-Oil return port; 212-Baffle; 213-First groove; 214-Second groove; 303-Partition plate. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0022] This technical solution provides a press oil leakage prevention structure. By providing an oil return component 200 and an oil baffle component 300 on the headstock 110 and connecting rod 140 respectively, the leaking lubricating grease at the rotatable connection position between the connecting rod 140 and the crankshaft 120 is blocked and guided to the chamber 111 of the headstock 110. This prevents the leaked lubricating grease from flowing along the surface of the connecting rod 140 to the upper die assembly 130. The grease guided to the chamber 111 is collected and flows into the oil return groove 210 for collection. This protects the leaked grease from flowing to the upper die assembly 130 or other working parts.

[0023] like Figure 1-5As shown, the oil leakage prevention structure for the press provided in this embodiment includes a headstock 110 connected therein for rotating the crankshaft 120, and an upper die assembly 130 disposed below the headstock 110 and connected to the crankshaft 120 via a connecting rod 140. The upper die assembly 130 reciprocates vertically above the frame 100 under the drive of the crankshaft 120 to complete the stamping action. Simultaneously, the headstock 110 is provided with holes for the connecting rod 140 to extend out. An oil return component 200 is also provided above it. The oil return component 200 is fixedly installed in the hole. The oil return component 200 has a movable hole 201 in the middle where the connecting rod 140 extends and swings. The oil return component 200 also has an oil return groove 210 surrounding the movable hole 201. An oil baffle 300 is provided on the part of the connecting rod 140 located inside the head seat 110. The oil baffle 300 is used to block oil leakage from the rotating connection between the connecting rod 140 and the crankshaft 120. The oil baffle 300 covers the oil return groove 210.

[0024] Specifically, a chamber 111 is provided inside the headstock 110 for the crankshaft 120 to be rotatably connected therein. The groove of the oil return groove 210 is connected to the chamber 111, so that the leaking oil in the chamber 111 flows into the oil return groove 210.

[0025] During the operation of the press, the crankshaft 120 rotates under the drive of the drive device (not shown in the figure). The upper die assembly 130 is vertically mounted on the frame 100 through a movable structure. The connecting rod 140 drives the upper die assembly 130 to reciprocate vertically, thereby completing the processing of the workpiece placed on the base 150. During the above process, the connecting rod 140 can move in the movable hole 201, thereby driving the upper die assembly 130 to move. At the same time, since the upper end of the connecting rod 140 is rotatably connected to the crankshaft 120, when the lubricating grease leaks from the rotatable connection between the connecting rod 140 and the crankshaft 120, it is blocked and restricted by the oil baffle 300. Under the restriction of the oil baffle 300, it drips into the chamber 111 and flows into the return oil groove 210 for recycling after accumulation. This protects the leaked grease and prevents it from flowing to other working positions or parts. It is worth noting that the area of ​​the oil baffle 300 is set to be larger than the area of ​​the oil return groove 210, so that the oil baffle 300 covers the oil return part 200. This prevents grease from dripping onto the upper mold assembly 130 below along the movable hole 201 on the surface of the oil baffle 300 during the swinging of the oil baffle 300 with the connecting rod 140.

[0026] In this embodiment, in order to further improve the ability to prevent leaked grease from dripping outside the chamber 111, a baffle 301 extending toward the oil return member 200 is provided on the edge of the oil baffle 300, so that the oil baffle 300 is formed with an oil baffle groove 302 with an opening toward the oil return member 200, and the orthographic projection of the oil baffle groove 302 toward the oil return member 200 covers the oil return member 200 within it.

[0027] By setting the baffle 301, the oil baffle 300 is set as a box that snaps towards the oil return component 200, thereby covering the oil return component 200 from top to bottom. This can cover the oil return component 200 and the movable hole 201, thus preventing leaked grease from dripping out of the movable hole 201.

[0028] Meanwhile, in this technical solution, an extension plate 112 is formed at the edge of the hole, protruding towards the oil-blocking groove 302 and extending into the oil-blocking groove 302, and the extension plate 112 defines the side wall outside the oil return groove 210, so that the oil-blocking groove 302 covers the oil-blocking groove 302 inside it.

[0029] That is, the side wall of the oil return groove 210 is extended into the oil baffle groove 302, so that the oil baffle groove 302 completely covers the oil return groove 210. It is understood that the oil baffle groove 302 is designed with sufficient and appropriate size during the assembly process to meet the swing angle of the connecting rod 140 and avoid the situation where the baffle 301 and the extension plate 112 collide with each other.

[0030] By extending the side wall height of the oil return groove 210 by setting the extension plate 112, the oil baffle 302 can completely cover the oil return groove 210. Therefore, when the oil baffle 300 moves and swings with the connecting rod 140, the grease on the end face of the oil baffle 300 will not fall off along the movable hole 201 under the swinging action, thus blocking and protecting the leaked grease, causing it to fall into the chamber 111 and flow into the oil return groove 210 after accumulating in the chamber 111. It is worth noting that, in order to facilitate the smooth flow of grease in the chamber 111 to the oil return groove 210, a through hole that is linked to the oil return groove 210 can be designed on the extension plate 112, so that the grease collected in the chamber 111 can flow along the through hole into the oil return groove 210 for collection.

[0031] In this embodiment, to facilitate the recovery of grease within the oil return tank 210, an oil return port 211 for pipe connection is provided at the bottom of the oil return tank 210. Leaking grease flowing into the oil return tank 210 can leak out through the oil return port 211 located at the bottom of the oil return tank 210, thereby achieving unified recovery and preventing grease overflow from the oil return tank 210.

[0032] In this embodiment, in order to make reasonable use of space and to quickly discharge the grease located in the oil return groove 210, a baffle 212 with a circumferential movable hole 201 is formed in the oil return groove 210. The baffle 212 divides the oil return groove 210 into a first groove 213 and a second groove 214 that are independent of each other. The oil return port 211 is provided with two ports located at the bottom of the first groove 213 and the second groove 214 respectively.

[0033] In actual use, the grease located in the oil return groove 210 can flow out along the oil return port 211 under its own gravity. In order to increase the flow rate, a baffle 212 is set to divide the oil return groove 210 into two parts, so that the first groove 213 and the second groove 214 have a smaller cross-sectional area. At this time, when the first groove 213 and the second groove 214 are filled with grease, compared with the oil return groove 210 without the baffle 212, the bottom of the grease in the first groove 213 and the second groove 214 has a higher pressure, which can increase the discharge rate along the oil return port 211.

[0034] In this embodiment, the oil baffle 300 is formed with a partition plate 303 that extends into the first groove 213 and the second groove 214 respectively, and the partition plate 303 divides the first groove 213 and the second groove 214 into two parts with their bottoms connected.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A press oil-leakage prevention structure, comprising a headstock connected therein for rotating a crankshaft, and an upper die assembly disposed below the headstock and driven by a connecting rod to the crankshaft, the upper die assembly reciprocating vertically on a frame under the drive of the crankshaft to complete the stamping action, characterized in that, The headstock is provided with a hole for the connecting rod to extend out; and the headstock is also provided with an oil return component, which is fixedly installed within the hole, and the oil return component has a movable hole in the middle for the connecting rod to extend and swing, and the oil return component is also provided with an oil return groove surrounding the movable hole; the portion of the connecting rod located inside the headstock is provided with an oil baffle, which is used to block oil leakage from the rotatable connection between the connecting rod and the crankshaft, and the oil baffle covers the oil return groove.

2. The press oil leakage prevention structure according to claim 1, characterized in that, The headstock has a chamber inside which the crankshaft is rotatably connected. The opening of the oil return groove is connected to the chamber, so that the leaking oil in the chamber flows into the oil return groove.

3. The press oil leakage prevention structure according to claim 1, characterized in that, The oil baffle has a baffle extending toward the oil return component, so that the oil baffle has an oil baffle groove with an opening toward the oil return component, and the orthographic projection of the oil baffle groove toward the oil return component covers the oil return component.

4. The press oil leakage prevention structure according to claim 3, characterized in that, An extension plate is formed at the edge of the hole, protruding toward the oil baffle groove and extending into the oil baffle groove, and the extension plate defines the sidewall of the outer side of the oil return groove, so that the oil baffle groove covers the oil baffle groove inside it.

5. The press oil leakage prevention structure according to claim 1, characterized in that, The bottom of the oil return tank is provided with an oil return port for pipeline connection.

6. The oil leakage prevention structure for a press according to claim 5, characterized in that, The oil return groove is formed with a baffle plate that surrounds the movable hole. The baffle plate divides the oil return groove into a first groove and a second groove that are independent of each other. The oil return port is provided with two ports located at the bottom of the first groove and the second groove, respectively.

7. The press oil leakage prevention structure according to claim 6, characterized in that, The oil baffle is formed with a partition plate that extends into the first groove and the second groove respectively, and the partition plate divides the first groove and the second groove into two parts that are connected at the bottom.

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