Hydraulic component and precision punching hydraulic press

Abstract

The present invention belongs to the field of precision blanking equipment, specifically a hydraulic assembly and a precision blanking hydraulic press, including a cylinder body, a piston, a cross beam, a push rod cylinder and a bearing rod; an oil chamber is provided in the cylinder body, the piston is provided in the oil chamber and is dynamically sealed with the oil chamber; the cylinder body is connected to the cross beam, a first through hole is provided in the cross beam, the push rod cylinder is provided in the first through hole and is slidably connected to the first through hole, the push rod cylinder can be pushed by the piston, and the push rod cylinder can move a certain distance in the first through hole; the bearing rod passes through the piston and the push rod cylinder in turn, the bearing rod is fixedly connected to the cylinder body, the piston and the bearing rod are dynamically sealed, and the first through hole can block the piston outside the first through hole. The advantage of the hydraulic assembly and the precision blanking hydraulic press is that the middle part of the template can be supported.

Description

Technical Field

[0001] The invention belongs to the field of precision blanking equipment, and in particular relates to a hydraulic component and a precision blanking hydraulic press. Background Art

[0002] The precision blanking equipment of the prior art includes a hydraulic press, which includes two sets of hydraulic components, the upper set of hydraulic components is used to connect the upper die of the blanking die, and the lower set of hydraulic components is used to connect the lower die of the blanking die. The blanking die includes a template and a push rod. A push rod hole is provided in the middle of the template. The push rod is inserted into the push rod hole, and the push rod can move up and down relative to the push rod hole; the hydraulic component includes a cylinder, a crossbeam and a pad connected in sequence, and a through hole is provided in the middle of the crossbeam and the pad, and the push rod can pass through the through hole; the edge of the template of the blanking die is connected to the pad, and during the movement of the piston, the push rod of the blanking die is pushed to move in the above-mentioned through hole, thereby realizing the function of the push rod to eject the product. The problem with the prior art is that the middle position of the template is adjacent to the above-mentioned through hole, the middle of the template lacks support, and the middle of the template is easily deformed.

[0003] Therefore, the prior art needs to be improved. Summary of the invention

[0004] The technical problem to be solved by the present invention is: the problem that the middle part of the template is easily deformed.

[0005] In order to achieve the above-mentioned purpose, the specific technical scheme of the present invention is as follows:

[0006] A hydraulic assembly comprises a cylinder body, a piston, a cross beam, a push rod tube and a load-bearing rod; an oil chamber is provided in the cylinder body, the piston is arranged in the oil chamber and is dynamically sealed with the oil chamber; the cylinder body is connected to the cross beam, a first through hole is provided in the cross beam, the push rod tube is arranged in the first through hole and is slidably connected to the first through hole, the push rod tube can be pushed by the piston, and the push rod tube can move a certain distance in the first through hole; the load-bearing rod passes through the piston and the push rod tube in turn, the load-bearing rod is fixedly connected to the cylinder body, the piston is dynamically sealed with the load-bearing rod, and the first through hole can block the piston outside the first through hole.

[0007] As an optional technical solution, it also includes a pad, a push rod connecting plate and a connecting plate, the connecting plate and the piston are respectively arranged at the upper and lower ends of the push rod tube; the pad is fixedly connected to the cross beam, a second through hole is provided in the pad, the push rod connecting plate is arranged in the second through hole and is slidably connected to the pad, the push rod connecting plate can slide relative to the second through hole for a certain distance, the load-bearing rod passes through the connecting plate and the push rod connecting plate in turn, the push rod connecting plate and the connecting plate are both slidably connected to the load-bearing rod; the push rod connecting plate is fixedly connected to the connecting plate, and the connecting plate abuts against the push rod tube; the connecting plate can enter the first through hole, and the first through hole can block the push rod connecting plate outside the first through hole.

[0008] As a further preferred technical solution, the load-bearing rod includes a connecting part and a load-bearing part, the connecting part is connected to the cylinder body, the load-bearing part is connected to the connecting part, the push rod connecting plate and the connecting plate are both slidably connected to the load-bearing part, and the piston and the push rod tube are both slidably connected to the connecting part.

[0009] As an optional technical solution, a proximity switch is also included, which is connected to the cross beam and is arranged beside the push rod tube. The piston can be pressed against the proximity switch.

[0010] As an optional technical solution, a connecting convex ring is provided on the cylinder body, a sinker is provided on the cross beam, and the outer wall of the connecting convex ring is connected to the side wall of the sinker; a static sealing ring is provided between the load-bearing rod and the cylinder body, a dynamic sealing ring is provided between the load-bearing rod and the piston, and a dynamic sealing ring is provided between the piston and the cylinder body.

[0011] A precision punching hydraulic press includes the above-mentioned hydraulic assembly, wherein the number of the hydraulic assemblies is two, and the two hydraulic assemblies are arranged up and down; in the upper hydraulic assembly, the cylinder body is arranged above the crossbeam; in the lower hydraulic assembly, the cylinder body is arranged below the crossbeam; and also includes a frame, and the crossbeams of the two hydraulic assemblies are connected to the frame.

[0012] As a further preferred technical solution, it also includes a flange, an outer cylinder, a positioning column and a base; the base is connected to the frame, the outer cylinder is connected to the top of the base, an outer oil chamber is formed between the outer cylinder and the base, the cylinder body of the lower oil pressure component is arranged in the outer oil chamber and is dynamically sealed with the outer oil chamber; the flange sleeve is arranged on the lower cylinder body and is dynamically sealed with the lower cylinder body, and the flange is connected to the top of the outer cylinder; a connecting blind hole is provided on the cylinder body of the lower oil pressure component, the positioning column is dynamically sealed with the connecting blind hole, and the bottom of the positioning column is fixedly connected to the base.

[0013] As a further preferred technical solution, it also includes a connecting column, which is arranged between the base and an upper crossbeam, the base and the upper crossbeam are both connected to the connecting column, and the lower crossbeam is slidably connected to the lower guide column.

[0014] The beneficial effects of the present invention are as follows: the crossbeam is directly or indirectly connected to the mold template in a relatively fixed manner, and the ejector rod is directly or indirectly connected to the mold ejector rod. When the mold is closed, the ejector rod is partially withdrawn into the cylinder body to avoid the mold ejector rod, and the load-bearing rod is fixedly connected to the cylinder body. The support rod is used to abut against the mold template to support the middle part of the template to avoid deformation of the middle part of the template. When the mold is opened, the piston is used to push the ejector rod and the ejector rod to move so as to eject the precision stamping product, and the load-bearing rod does not move with the piston. The advantage of the present invention is that the load-bearing rod is used to support the middle part of the mold template, which can prevent the mold template from deforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the oil pressure assembly of the present invention;

[0016] Figure 2 yes Figure 1 A magnified view of part A;

[0017] Figure 3 yes Figure 1 A magnified view of part B;

[0018] Figure 4 It is a schematic diagram of the precision punching hydraulic press of the present invention.

[0019] In the figure: 1-hydraulic component, 11-cylinder body, 111-connecting blind hole, 112-connecting convex ring, 12-piston, 13-crossbeam, 130-first through hole, 131-second step, 132-sunk platform, 14-thrust rod tube, 141-second convex ring, 15-load-bearing rod, 151-connecting part, 152-load-bearing part, 153-connecting nail, 16-pad, 161-first step, 17-thrust rod connecting plate, 171-first convex ring, 18-connecting plate, 19-proximity switch, 10-dynamic sealing ring, 101-static sealing ring, 2-frame, 3-flange, 4-outer cylinder, 5-positioning column, 6-base, 7-upper connecting column, 8-lower guide column. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with specific embodiments.

[0021] like Figure 1 and Figure 3 , is an embodiment of the oil pressure assembly 1 of the present invention, specifically:

[0022] A hydraulic component 1 includes a cylinder body 11, a piston 12, a cross beam 13, a push rod tube 14 and a load-bearing rod 15; an oil chamber is provided in the cylinder body 11, the piston 12 is arranged in the oil chamber and is dynamically sealed with the oil chamber, the cylinder body 11 is connected to the cross beam 13, a first through hole 130 is provided in the cross beam 13, the push rod tube 14 is arranged in the first through hole 130 and is slidably connected to the first through hole 130, the push rod tube 14 can be pushed by the piston 12, the push rod tube 14 can move a certain distance in the first through hole 130, the load-bearing rod 15 passes through the piston 12 and the push rod tube 14 in sequence, the load-bearing rod 15 is fixedly connected to the cylinder body 11, the piston 12 is dynamically sealed with the load-bearing rod 15, and the first through hole 130 can block the piston 12 outside the first through hole 130.

[0023] In the present invention, the crossbeam 13 is used to be directly or indirectly connected to the mold template in a relatively fixed manner, and is directly or indirectly connected to the mold ejector by using the ejector tube 14. The load-bearing rod 15 is used to abut against the middle part of the mold template. Since the load-bearing rod 15 is connected to the cylinder body 11, the position of the load-bearing rod 15 remains unchanged during the stamping process of the product. The load-bearing rod 15 can support the middle part of the template to avoid deformation of the middle part of the template; when the mold is closed, the ejector tube 14 can move together with the piston 12 and partially retreat into the cylinder body 11 to avoid the mold ejector; since the first through hole 130 can block the piston 12 outside the first through hole 130, the piston 12 cannot slide out of the oil chamber. When the mold is opened, the piston 12 is used to push the ejector tube 14 and the mold ejector to move a certain distance to achieve the effect of ejecting the precision stamping product. The advantage of the present invention is that the load-bearing rod 15 is used to support the middle part of the mold template, which can prevent the middle part of the mold template from deforming.

[0024] In a preferred embodiment, it also includes a pad 16, a push rod connecting plate 17 and a connecting plate 18, the connecting plate 18 and the piston 12 are respectively arranged at the upper and lower ends of the push rod tube 14; the pad 16 is fixedly connected to the cross beam 13, a second through hole is provided in the pad 16, the push rod connecting plate 17 is arranged in the second through hole and is slidably connected with the pad 16, the push rod connecting plate 17 can slide relative to the second through hole for a certain distance, the load-bearing rod 15 passes through the connecting plate 18 and the push rod connecting plate 17 in sequence, the push rod connecting plate 17 and the connecting plate 18 are both slidably connected to the load-bearing rod 15, the push rod connecting plate 17 is fixedly connected to the connecting plate 18, and the connecting plate 18 abuts against the push rod tube 14; the connecting plate 18 can enter the first through hole 130, and the first through hole 130 can block the push rod connecting plate 17 outside the first through hole 130. In this embodiment, the pad 16 is used to connect the mold template and the crossbeam 13, the push rod connecting plate 17 is used to abut against the push rod of the mold, and the connecting plate 18 can enter the first through hole 130, so that the travel range of the connecting plate 18 and the push rod connecting plate 17 is longer.

[0025] Furthermore, the outer edge of the push rod connecting plate 17 protrudes to the outside of the connecting plate 18 and the outside of the push rod tube 14, and the outer edge of the push rod tube 14 protrudes to the outside of the connecting plate 18; the pad 16 is provided with a first step 161, and the push rod connecting plate 17 is provided with a first convex ring 171, the first convex ring 171 is provided between the first step 161 and the connecting plate 18, and the first step 161 can be crimped with the first convex ring 171; the push rod tube 14 is provided with a second convex ring 141, and the cross beam 13 is provided with a second step 131, the second convex ring 141 is adjacent to the piston 12, and the second step 131 can be crimped with the second convex ring 141. Since the outer edge of the push rod tube 14 protrudes to the outside of the connecting plate 18, the connecting plate 18 can enter the first through hole 130 on the cross beam 13 with the push rod tube 14. Since the outer edge of the push rod connecting plate 17 protrudes to the outside of the connecting plate 18 and the outside of the push rod tube 14, the outer edge of the push rod connecting plate 17 cannot enter the first through hole 130, so the push rod connecting plate 17 can only move outside the first through hole 130. The first step 161 on the pad 16 is used to limit the position of the first protruding ring 171 on the push rod connecting plate 17, so the first protruding ring 171 can only move between the first step 161 and the first through hole 130; in addition, the position of the second protruding ring 141 on the push rod tube 14 is limited by the second step 131 on the cross beam 13, so that the position of the second protruding ring 141 is limited between the piston 12 and the second step 131 to prevent the push rod tube 14 from disengaging from the first through hole 130.

[0026] In a further preferred embodiment, the load-bearing rod 15 includes a connecting portion 151 and a load-bearing portion 152, the connecting portion 151 is connected to the cylinder body 11, the load-bearing portion 152 is connected to the connecting portion 151, the ejector connecting plate 17 and the connecting plate 18 are both slidably connected to the load-bearing portion 152, and the piston 12 and the ejector tube 14 are both slidably connected to the connecting portion 151. The load-bearing portion 152 is used to directly abut the template of the mold, and the material of the load-bearing portion 152 needs to be a material with high rigidity, while the rigidity requirement of the connecting portion 151 is not particularly high. Setting the load-bearing rod 15 as the load-bearing portion 152 and the connecting portion 151 is conducive to reducing material costs.

[0027] In an optional embodiment, a proximity switch 19 is further included, which is connected to the cross beam 13 and is disposed beside the push rod tube 14. The piston 12 can be pressed against the proximity switch 19. The proximity switch 19 is used to detect the position of the piston 12. The distance between the piston 12 and the cross beam 13 can be determined based on the detection signal of the proximity switch 19 to avoid excessive input oil pressure.

[0028] In an optional embodiment, a connecting convex ring 112 is provided on the cylinder body 11, a sink 132 is provided on the cross beam 13, and the outer wall of the connecting convex ring 112 is connected to the side wall of the sink 132; a static sealing ring 101 is provided between the load-bearing rod 15 and the cylinder body 11, a dynamic sealing ring 10 is provided between the load-bearing rod 15 and the piston 12, and a dynamic sealing ring 10 is provided between the piston 12 and the cylinder body 11. The connecting convex ring 112 and the sink 132 cooperate with each other to achieve mutual positioning between the cross beam 13 and the cylinder body 11. The dynamic sealing ring 10 and the static sealing ring 101 are used to prevent oil leakage.

[0029] like Figure 4 , is an embodiment of the precision punching hydraulic press of the present invention, specifically:

[0030] A precision punching hydraulic press includes a hydraulic assembly 1, wherein the number of the hydraulic assembly 1 is two, and the two hydraulic assemblies 1 are arranged facing each other from top to bottom; in the upper hydraulic assembly 1, the cylinder 11 is arranged above the crossbeam 13; in the lower hydraulic assembly 1, the cylinder 11 is arranged below the crossbeam 13; and further includes a frame 2, and the crossbeams 13 of the two hydraulic assemblies 1 are connected to the frame 2. The upper hydraulic assembly 1 is used to connect the upper mold plate of the stamping die, and the lower hydraulic assembly 1 is used to connect the lower mold plate of the stamping die. The upper bearing rod 15 and the lower bearing rod 15 are used to support the upper mold plate and the lower mold plate of the stamping die, respectively.

[0031] In a preferred embodiment, the flange 3, the outer cylinder 4, the positioning column 5 and the base 6 are further included. The base 6 is connected to the frame 2, the outer cylinder 4 is connected to the top of the base 6, an outer oil chamber is formed between the outer cylinder 4 and the base 6, the cylinder 11 of the lower oil pressure component 1 is arranged in the outer oil chamber and is dynamically sealed with the outer oil chamber, the flange 3 is sleeved on the lower cylinder 11 and is dynamically sealed with the lower cylinder 11, the flange 3 is connected to the top of the outer cylinder 4, the cylinder 11 of the lower oil pressure component 1 is provided with a connecting blind hole 111, the positioning column 5 is dynamically sealed with the connecting blind hole 111, and the bottom of the positioning column 5 is fixedly connected to the base 6. After the amount of oil in the outer oil chamber changes, the lower cylinder 11 can be raised and lowered with the cooperation of the outer cylinder 4, the flange 3 and the base 6 to realize the opening and closing of the mold.

[0032] Furthermore, it also includes a connecting column 7, which is arranged between the base 6 and the upper crossbeam 13, the base 6 and the upper crossbeam 13 are both connected to the connecting column 7, and the lower crossbeam 13 is slidably connected to the connecting column 7. The connecting column 7 is used to limit the movement direction of the lower crossbeam 13 to the vertical direction, which is a guide for opening and closing the mold.

[0033] In the absence of conflict, the above-mentioned embodiments and features thereof may be combined with each other.

[0034] In the description of the present invention, it is necessary to understand that the terms "length", "up", "down", "top", "bottom", "inside", "outside", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A hydraulic component, characterized in that: It includes a cylinder body, a piston, a cross beam, a push rod tube and a load-bearing rod; An oil chamber is provided in the cylinder body, and the piston is arranged in the oil chamber and is dynamically sealed with the oil chamber; The cylinder body is connected to the crossbeam, a first through hole is provided in the crossbeam, the push rod tube is provided in the first through hole and is slidably connected to the first through hole, the push rod tube can be pushed by the piston, and the push rod tube can move a certain distance in the first through hole; The load-bearing rod passes through the piston and the push rod tube in sequence, the load-bearing rod is fixedly connected to the cylinder body, the piston is dynamically sealed with the load-bearing rod, and the first through hole can block the piston outside the first through hole; It also includes a pad, a push rod connecting plate and a connecting plate, wherein the connecting plate and the piston are respectively arranged at the upper and lower ends of the push rod tube; the pad is fixedly connected to the cross beam, the pad is provided with a second through hole, the push rod connecting plate is arranged in the second through hole and is slidably connected to the pad, the push rod connecting plate can slide relative to the second through hole for a certain distance, the load-bearing rod passes through the connecting plate and the push rod connecting plate in sequence, and the push rod connecting plate and the connecting plate are both slidably connected to the load-bearing rod; the push rod connecting plate is fixedly connected to the connecting plate, and the connecting plate abuts against the push rod tube; the connecting plate can enter the first through hole, and the first through hole can block the push rod connecting plate outside the first through hole; A connecting convex ring is provided on the cylinder body, a sinking platform is provided on the cross beam, and the outer wall of the connecting convex ring is connected to the side wall of the sinking platform; a static sealing ring is provided between the load-bearing rod and the cylinder body, a dynamic sealing ring is provided between the load-bearing rod and the piston, and a dynamic sealing ring is provided between the piston and the cylinder body.

2. The hydraulic assembly according to claim 1, characterized in that: The outer edge of the push rod connecting plate protrudes to the outside of the connecting plate and the outside of the push rod tube, and the outer edge of the push rod tube protrudes to the outside of the connecting plate; a first step is provided on the pad, and a first convex ring is provided on the push rod connecting plate, the first convex ring is provided between the first step and the connecting plate, and the first step can be crimped with the first convex ring; a second convex ring is provided on the push rod tube, and a second step is provided in the cross beam, the second convex ring is adjacent to the piston, and the second step can be crimped with the second convex ring.

3. The hydraulic assembly according to claim 1, characterized in that: The load-bearing rod includes a connecting part and a load-bearing part, the connecting part is connected to the cylinder body, the load-bearing part is connected to the connecting part, the push rod connecting plate and the connecting plate are both slidably connected to the load-bearing part, and the piston and the push rod tube are both slidably connected to the connecting part.

4. The hydraulic assembly according to claim 1, characterized in that: It also includes a proximity switch, which is connected to the cross beam and is arranged beside the push rod tube. The piston can be pressed against the proximity switch.

5. A precision punching hydraulic press, characterized in that: It includes the oil pressure assembly as described in any one of claims 1 to 4, the number of the oil pressure assemblies is two, and the two oil pressure assemblies are arranged up and down; in the upper oil pressure assembly, the cylinder body is arranged above the cross beam; in the lower oil pressure assembly, the cylinder body is arranged below the cross beam; it also includes a frame, and the cross beams of the two oil pressure assemblies are connected to the frame.

6. The precision punching hydraulic press according to claim 5, characterized in that: It also includes a flange, an outer cylinder, a positioning column and a base; The base is connected to the frame, the outer cylinder is connected to the top of the base, an outer oil chamber is formed between the outer cylinder and the base, and a cylinder body of a lower oil pressure assembly is arranged in the outer oil chamber and is dynamically sealed with the outer oil chamber; The flange is sleeved on the lower cylinder body and is dynamically sealed with the lower cylinder body, and the flange is connected to the top of the outer cylinder barrel; A connecting blind hole is provided on the cylinder body of the lower oil pressure assembly, the positioning column is dynamically sealed with the connecting blind hole, and the bottom of the positioning column is fixedly connected with the base.

7. The precision punching hydraulic press according to claim 6, characterized in that: It also includes a connecting column, which is arranged between the base and an upper crossbeam. The base and the upper crossbeam are both connected to the connecting column, and the lower crossbeam is slidably connected to the connecting column.

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