Automatic oil return device of workbench

Abstract

The utility model provides an automatic oil return device for a workbench, which belongs to the technical field of stamping presses and comprises an oil collecting component and an oil outlet component, the oil collecting component comprises a valve body, a mounting cavity is arranged in the middle of the valve body, and an oil inlet pipe is mounted and communicated with the upper part of the mounting cavity; a sealing plate is mounted at the bottom of the mounting cavity; an oil outlet is formed in the middle of the sealing plate; a valve core is mounted in the middle of the mounting cavity, divides the mounting cavity into an upper oil storage cavity and a lower oil storage cavity which are mutually independent, and is provided with an oil channel for communicating the upper oil storage cavity with the lower oil storage cavity; a step surface is arranged on the outer side wall of the valve core; the lower portion of the valve element extends out of the oil outlet, and a gap is formed between the side wall of the lower portion of the valve element and the oil outlet. The oil outlet assembly comprises an abutting frame, an abutting part and an oil receiving part are arranged at the upper end of the abutting frame, and the lower end of the oil receiving part communicates with an oil outlet pipe. The manual operation participation degree can be reduced, the labor cost is reduced, and the oil leakage risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping presses, and in particular relates to an automatic oil return device for a workbench. Background Art

[0002] At present, when stamping equipment is used to perform deep drawing, bending and other processing procedures on stamped sheets, in order to avoid defects such as black marks and scratches on the stamped sheets during the deformation process, stamping oil is generally applied to the surface of the stamped sheets first, that is, a layer of oil film is first set on the surface of the stamped sheets, and then the stamped sheets are deep drawn. In this way, during the deep drawing process of the stamped sheets, the oil film formed on the surface of the stamped sheets will act as a lubricant, thereby preventing the stamped sheets from having defects such as cracks.

[0003] At the same time, when the stamping equipment is used to perform deep drawing, bending and other processing procedures on the stamping sheet, the oil film set on the surface of the stamping sheet will also be squeezed out by the upper film and the lower die, thereby forming oil droplets on the upper surface of the workbench used to place the mold on the stamping equipment. In order to prevent oil droplets from contaminating the stamping equipment and the related working environment, the existing stamping equipment generally sets a guide groove and an oil collection box on the workbench. As the number of stamping times increases, the oil droplets will gradually converge into oil, and flow through the corresponding guide groove into the oil collection box installed on the side wall of the workbench for collection. Moreover, when the oil in the oil collection box is full, the staff needs to manually open the workbench to take out the oil collection box, and then put the oil collection box back to its original position after pouring out the waste oil inside.

[0004] Therefore, the oil collection structure set on the existing stamping equipment has the problem of high manual participation. It requires staff to pay attention to the oil collection status in the oil box in time. Once the staff forgets to pour out the waste oil in the oil box, the oil will flow on the ground after the oil box is full of oil, causing pollution to the stamping equipment and the working environment. Utility Model Content

[0005] The technical problem solved by the utility model is to provide an automatic oil return device for a workbench installed between a mobile workbench and a base of a stamping equipment, so that it can not only temporarily store oil when the mobile workbench of the stamping equipment is opened, but also realize automatic oil discharge when the mobile workbench of the stamping equipment is opened and lowered, thereby reducing the participation of manual operation, reducing labor costs, and reducing the risk of oil leakage.

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: an automatic oil return device for a workbench, which includes an oil collecting assembly and an oil outlet assembly, the oil collecting assembly includes a valve body that can be installed on a mobile workbench of a stamping equipment, an installation cavity is arranged in the middle of the valve body, an oil inlet pipe is installed and connected to the upper part of the installation cavity, and the oil inlet end of the oil inlet pipe can be connected to the oil guide groove on the mobile workbench; a sealing plate is installed at the bottom of the installation cavity, and an oil outlet is arranged in the middle of the sealing plate; a valve core is vertically slidably installed in the middle of the installation cavity, the outer side wall of the upper part of the valve core contacts the inner side wall of the installation cavity and divides the installation cavity into mutually independent upper oil storage The oil outlet assembly comprises an abutment frame which can be mounted on the base of the stamping equipment, an abutment portion and an oil receiving portion are provided at the upper end of the abutment frame, the upper end of the abutment portion can abut against the lower end of the valve core, the upper end of the oil receiving portion is arranged opposite to the oil outlet, and the lower end of the oil receiving portion is connected with an oil outlet pipe.

[0007] At this time, when the stamping equipment using a vertically liftable movable workbench is equipped with the workbench automatic oil return device provided by the utility model between its movable workbench and the base, when the deep drawing operation is completed and the movable workbench is in the state of opening the base, since the movable workbench is in the raised state, the valve core will be in a falling state relative to the valve body under the action of the spring force, and at this time the lower oil storage chamber and the oil outlet will be in a disconnected state, and the oil squeezed out during the deep drawing process will be temporarily stored in the upper oil storage chamber and the lower oil storage chamber through the oil guide groove and the oil inlet pipe provided on the movable workbench to realize the oil storage function; conversely, during the deep drawing operation, since the movable workbench in this type of stamping equipment will be in a falling state, the lower end of the valve core will contact the abutment frame provided on the base and move upward relative to the valve body, thereby connecting the lower oil storage chamber with the oil outlet, and at this time the oil in the lower oil storage chamber will flow into the oil receiving part, and flow into the waste oil pool or other waste oil treatment equipment connected to it through the oil outlet pipe to realize the corresponding automatic oil discharge function.

[0008] Furthermore, a threaded sleeve is installed at the upper part of the installation cavity, a pipe joint is provided in the middle part of the threaded sleeve, and the pipe joint is connected to the oil outlet end of the oil inlet pipe, thereby fixing the oil inlet pipe.

[0009] Furthermore, a spring is arranged between the bottom surface of the threaded sleeve and the upper end of the valve core. When the step surface of the valve core contacts the upper surface of the sealing plate, the spring is in a compressed state, thereby ensuring that the valve core is in a pressurized state when it contacts the sealing plate and avoiding waste oil leakage accidents.

[0010] Furthermore, the oil channel includes a main oil channel opened on the upper end surface of the valve core and at least two branch oil channels opened on the outer side wall of the valve core. The upper ends of all branch oil channels are connected to the main oil channel, and the lower ends of all branch oil channels are connected to the lower oil storage chamber.

[0011] Furthermore, a sealing ring is provided on the upper surface of the sealing plate, and when the valve core is in a falling state, the sealing ring is used to seal the step surface of the sealing plate and the valve core, thereby further avoiding waste oil leakage accidents.

[0012] Furthermore, a sealing ring is provided between the lower surface of the sealing plate and the bottom of the valve body, and the sealing ring is used to seal the sealing plate and the valve body, thereby further avoiding waste oil leakage accidents.

[0013] Furthermore, a mounting flange is provided at the bottom of the valve body, the mounting flange is provided with at least two mounting holes, and can be mounted on a movable workbench of the stamping equipment by fasteners such as bolts passing through the mounting holes.

[0014] Furthermore, the abutment frame includes a connecting piece, an abutment portion and an oil receiving portion are arranged at the upper end of the connecting piece, a connecting seat which can be installed on the base of the stamping equipment is installed at the lower end of the connecting piece, an oil storage tank is arranged at the upper end of the connecting seat, the oil storage tank is connected with the oil receiving portion, and an oil outlet channel is opened at the bottom of the oil storage tank, and the oil outlet channel is connected with the oil outlet pipe through a pipe joint.

[0015] Furthermore, the oil receiving portion includes an oil receiving hole arranged on the connecting piece, and the hole diameter of the upper part of the oil receiving hole is larger than the hole diameter of the lower part of the oil receiving hole to ensure that the oil flows smoothly from the oil receiving hole of the connecting piece into the oil storage tank at the connecting seat.

[0016] Furthermore, the outer ring of the connecting seat is provided with a connecting flange, which is provided with at least two connecting holes and can be installed in a preset installation cavity on the base of the stamping equipment by fasteners such as bolts passing through the connecting holes.

[0017] It can be seen from the above technical scheme that the utility model has the following advantages: when a stamping equipment using a vertically liftable mobile workbench is equipped with the workbench automatic oil return device provided by the utility model between its mobile workbench and the base, it can not only utilize the utility model to temporarily store oil, but also can realize automatic oil discharge when the mobile workbench on the stamping equipment is opened and lowered for stamping, thereby achieving the purpose of reducing the degree of manual operation participation, reducing labor costs, and reducing the risk of oil leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a structural schematic diagram of the oil collecting assembly of the utility model when it is installed on a mobile workbench;

[0020] Figure 2 This is a schematic diagram of the structure of the oil outlet assembly of the utility model when it is installed on the base;

[0021] Figure 3 It is a structural schematic diagram of the utility model when the mobile workbench is in an ascending state;

[0022] Figure 4 This is a schematic diagram of the structure of the utility model when the mobile workbench is in a falling state (the direction of the arrow in the figure is the direction of oil flow).

[0023] In the figure: 1. oil inlet pipe; 2. spring; 3. valve body; 4. main oil channel; 5. mounting flange; 6. sealing plate; 7. sealing ring; 8. oil outlet; 9. step surface; 10. movable workbench; 11. branch oil channel; 12. valve core; 13. upper oil storage chamber; 14. threaded sleeve; 15. oil receiving part; 16. abutting part; 17. connecting piece; 18. connecting seat; 19. oil outlet pipe; 20. oil storage tank; 21. base. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 4 As shown, the utility model provides an automatic oil return device for a workbench, which includes an oil collecting component that can be installed on a movable workbench 10 of a stamping device and an oil outlet component that can be installed on the upper end of a base 21 of the stamping device.

[0026] Among them, Figure 1As shown, the oil collecting assembly includes a valve body 3 that can be installed on a mobile workbench 10 of a stamping equipment. A mounting flange 5 is provided at the bottom of the valve body 3. The mounting flange 5 is provided with at least two mounting holes and can be installed on the mobile workbench 10 of the stamping equipment that can be raised and lowered relative to the base 21 by fasteners such as bolts passing through the mounting holes.

[0027] The middle of the valve body 3 is penetrated by an installation cavity, the upper part of the installation cavity is threadedly installed with a threaded sleeve 14, the middle part of the threaded sleeve 14 is installed with an oil inlet pipe 1 through a pipe joint, and the oil inlet end of the oil inlet pipe 1 can be connected with the oil guide groove on the movable workbench 10, and the oil outlet end of the oil inlet pipe 1 is connected with the installation cavity. A sealing plate 6 is installed at the bottom of the installation cavity, and sealing rings 7 are provided on the upper and lower surfaces of the sealing plate 6, and an oil outlet 8 is provided in the middle of the sealing plate 6.

[0028] A valve core 12 is vertically slidably installed in the middle of the installation cavity, and the outer side wall of the upper part of the valve core 12 contacts the inner side wall of the installation cavity and divides the installation cavity into an upper oil storage cavity 13 and a lower oil storage cavity that are independent of each other. An oil channel is provided in the middle of the valve core 12, and the oil channel includes a main oil channel 4 opened on the upper end surface of the valve core 12 and at least two branch oil channels 11 opened on the outer side wall of the valve core 12, and the upper part of the main oil channel 4 is connected to the upper oil storage cavity 13, the upper ends of all branch oil channels 11 are connected to the main oil channel 4, and the lower ends of all branch oil channels 11 are connected to the lower oil storage cavity. A step surface 9 is provided on the outer side wall of the middle part of the valve core 12, and the step surface 9 can contact and separate with the upper surface of the sealing plate 6. The lower part of the valve core 12 extends from the oil outlet 8, and a gap is provided between the side wall of the lower part of the valve core 12 and the oil outlet 8.

[0029] In addition, the utility model further provides a spring 2 between the bottom surface of the threaded sleeve 14 and the upper end of the valve core 12, and the spring 2 is in a compressed state when the step surface 9 of the valve core 12 contacts the upper surface of the sealing plate 6, thereby ensuring that the valve core 12 is in a pressurized state when it contacts the sealing plate 6, and further avoiding waste oil leakage accidents.

[0030] like Figure 2As shown, the oil outlet assembly includes an abutment frame that can be installed on the base 21 of the stamping equipment, and the abutment frame includes a connecting member 17. The upper end of the connecting member 17 is provided with an abutment portion 16 and an oil receiving portion 15, and the connecting oil portion 15 includes an oil receiving hole provided on the connecting member 17, and the aperture of the upper part of the oil receiving hole is larger than the aperture of the lower part of the oil receiving hole. The lower end of the connecting member 17 is provided with a connecting seat 18 that can be installed on the base 21 of the stamping equipment, and the outer ring of the connecting seat 18 is provided with a connecting flange, and the connecting flange is provided with at least two connecting holes, and can be installed in a preset installation cavity on the base 21 of the stamping equipment through fasteners such as bolts passing through the connecting holes; the upper end of the connecting seat 18 is provided with an oil storage tank 20, and the oil storage tank 20 is connected with the oil receiving portion 15, and the bottom of the oil storage tank 20 is provided with an oil outlet channel, and the oil outlet channel is connected with the oil outlet pipe 19 through a pipe joint.

[0031] At this time, when the stamping equipment using the vertically liftable movable workbench 10 is provided with the workbench automatic oil return device provided by the utility model between the movable workbench 10 and the base 21, when the deep drawing operation is completed and the movable workbench is in the state of opening the base, since the movable workbench 10 is in the raised state, the valve core 12 will be in a falling state relative to the valve body 3 under the action of the spring force, and at this time, the lower oil storage chamber and the oil outlet 8 will be in a disconnected state, and the oil squeezed out during the deep drawing process will pass through the oil guide groove and the inlet port 8 provided on the movable workbench 10. The oil pipe 1 is temporarily stored in the upper oil storage chamber 13 and the lower oil storage chamber to realize the oil storage function; on the contrary, during the drawing operation, since the movable workbench 10 in this type of stamping equipment will be in a falling state, the lower end of the valve core 12 will contact the abutment frame provided on the base 21 and move upward relative to the valve body 3, so that the lower oil storage chamber is connected to the oil outlet 8. At this time, the oil in the lower oil storage chamber will flow into the oil receiving portion 15 and flow into the waste oil pool or other waste oil treatment equipment connected thereto through the oil outlet pipe 19 to realize the corresponding automatic oil discharge function.

[0032] In this way, when a stamping equipment using a vertically liftable mobile workbench 10 is equipped with the workbench automatic oil return device provided by the utility model between its mobile workbench 10 and the base 21, it can not only utilize the utility model to temporarily store oil, but also realize automatic oil discharge when the mobile workbench 10 on the stamping equipment is opened and lowered for stamping, thereby achieving the purpose of reducing the degree of manual operation participation, reducing labor costs, and reducing the risk of oil leakage.

[0033] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic oil return device for a workbench, comprising an oil collecting component and an oil outlet component; characterized in that: The oil collecting assembly comprises a valve body which can be mounted on a movable workbench of a stamping machine, a mounting cavity is arranged in the middle of the valve body, an oil inlet pipe is installed and connected to the upper part of the mounting cavity, and the oil inlet end of the oil inlet pipe can be connected to the oil guide groove on the movable workbench; a sealing plate is installed at the bottom of the mounting cavity, and an oil outlet is arranged in the middle of the sealing plate; a valve core is vertically slidably mounted in the middle of the mounting cavity, the outer side wall of the upper part of the valve core contacts with the inner side wall of the mounting cavity and divides the mounting cavity into an upper oil storage cavity and a lower oil storage cavity which are independent of each other, an oil channel is arranged in the middle of the valve core, and the upper part of the oil channel is connected to the lower part of the oil storage cavity; The upper part is connected with the upper oil storage chamber, and the lower part of the oil channel is connected with the lower oil storage chamber; the outer side wall of the middle part of the valve core is provided with a step surface, and the step surface can contact and separate with the upper surface of the sealing plate; the lower part of the valve core extends out from the oil outlet and a gap is provided between the side wall of the lower part of the valve core and the oil outlet; the oil outlet assembly includes an abutment frame that can be installed on the base of the stamping equipment, and the upper end of the abutment frame is provided with an abutment portion and an oil receiving portion, the upper end of the abutment portion can abut with the lower end of the valve core, the upper end of the oil receiving portion is arranged opposite to the oil outlet, and the lower end of the oil receiving portion is connected with an oil outlet pipe.

2. The automatic oil return device for a workbench according to claim 1 is characterized in that: A threaded sleeve is installed on the upper part of the installation cavity, a pipe joint is arranged in the middle part of the threaded sleeve, and the pipe joint is connected with the oil outlet end of the oil inlet pipe.

3. The automatic oil return device for a workbench according to claim 2 is characterized in that: A spring is arranged between the bottom surface of the threaded sleeve and the upper end of the valve core. When the step surface of the valve core contacts the upper surface of the sealing plate, the spring is in a compressed state.

4. The automatic oil return device for a workbench according to claim 1, characterized in that: The oil channel includes a main oil channel opened on the upper end surface of the valve core and at least two branch oil channels opened on the outer side wall of the valve core. The upper ends of all branch oil channels are connected to the main oil channel, and the lower ends of all branch oil channels are connected to the lower oil storage cavity.

5. The automatic oil return device for a workbench according to claim 1, characterized in that: A sealing ring is arranged on the upper surface of the sealing plate.

6. The automatic oil return device for a workbench according to claim 1, characterized in that: A sealing ring is arranged between the lower surface of the sealing plate and the bottom of the valve body.

7. The automatic oil return device for a workbench according to claim 1, characterized in that: The bottom of the valve body is provided with a mounting flange, and the mounting flange is provided with at least two mounting holes.

8. The automatic oil return device for a workbench according to claim 1, characterized in that: The abutment frame includes a connecting piece, an abutment portion and an oil receiving portion are arranged at the upper end of the connecting piece, a connecting seat which can be installed on the base of the stamping equipment is installed at the lower end of the connecting piece, an oil storage tank is arranged at the upper end of the connecting seat, the oil storage tank is connected with the oil receiving portion, and an oil outlet channel is opened at the bottom of the oil storage tank, and the oil outlet channel is connected with the oil outlet pipe through a pipe joint.

9. The automatic oil return device for a workbench according to claim 8, characterized in that: The oil receiving portion comprises an oil receiving hole arranged on the connecting piece, and the hole diameter of the upper part of the oil receiving hole is larger than the hole diameter of the lower part of the oil receiving hole.

10. The automatic oil return device for a workbench according to claim 8, characterized in that: The outer ring of the connecting seat is provided with a connecting flange, and the connecting flange is provided with at least two connecting holes.

Images