Workpiece positioning device for closed double-point press

Abstract

The utility model discloses a workpiece positioning device for a closed double-point press, and relates to the technical field of closed double-point presses. The closed type double-point press machine comprises a closed type double-point press machine body, wherein the surface of the closed type double-point press machine body is connected with a workbench. According to the utility model, the sliding plate which is in sliding arrangement with the fixed rod is convenient to drive the positioning frame to descend along with the downward pressing of the closed double-point press body, so that the positioning rod corresponds to a hole formed in the surface of a workpiece, and the side position of the workpiece is pressed and limited; through the hinging effect of a first hinging seat and a second hinging seat, a hinging rod can be correspondingly inclined along with lifting of a sliding plate, descending of the sliding plate can be conveniently adapted through a composite external expansion spring and a sliding block arranged in a sliding mode, and the workpiece pressing and positioning stability of a positioning frame is improved while part of the pressing acting force of the sliding plate is dispersed; and therefore, the workpiece positioning stability is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of closed-type double-point press, and specifically relates to a workpiece positioning device for a closed-type double-point press. Background Technology

[0002] The main drive shaft of the closed-type double-point press is arranged in the left-right direction and has a two-stage reduction. The first stage is an M-type multi-wedge belt drive, and the second stage is a spur gear drive, which has high precision and low noise. The main drive motor adopts an eddy current speed regulating motor with a large speed range. The clutch and brake adopt a dry plate-shaped low-inertia pneumatic friction structure, which is smooth and uses a double valve control, which is sensitive, safe and reliable. A hydraulic overload protection system is set in the slide block, and the workpiece needs to be positioned when processing the workpiece.

[0003] Chinese patent CN202421039449.4 discloses a closed-type double-point press that is easy to install, including a base fixedly installed on the ground. The base has two placement openings. The closed-type double-point press body is provided on the top of the base. Two mounting plates are fixedly installed on the bottom of the closed-type double-point press body, and the bottom of the two mounting plates extends into the two placement openings respectively. The outer wall of the two mounting plates that are close to each other is provided with a slot. A cavity is provided in the base. A through opening is provided on the top of the base and communicates with the cavity. A movable plate is provided in the cavity, and the top of the two movable plates is provided with an arc-shaped opening.

[0004] In most current closed-loop double-point presses, when forming workpieces by pressure, the workpiece is generally placed on the worktable and aligned with the center of the upper pressure component. The workpiece is then positioned by pressure during the forming process. However, since most workpieces have the characteristics of a stamped and bent shape, if only the middle position of the workpiece is positioned during bending, the left and right sides of the workpiece will inevitably warp up during bending, resulting in scrap and affecting the processing effect of the workpiece.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] In view of the problems in the related technologies, this utility model proposes a workpiece positioning device for a closed double-point press to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model relates to a workpiece positioning device for a closed-type double-point press, comprising the body of the closed-type double-point press:

[0009] The surface of the closed-type double-point press body is connected to a worktable, and two hinge components and two positioning components are respectively provided on the closed-type double-point press body.

[0010] The surfaces of both positioning components are connected to the surface of the closed-type dual-point press body for positioning the workpiece.

[0011] The surfaces of the two hinge components are connected to the inner side of the closed dual-point press body to drive the two positioning components to adjust vertically.

[0012] Furthermore, each of the two hinge assemblies includes two fixed rods, two second hinge seats, and two retraction springs. All four fixed rods are disposed on the inner side of the closed-type double-point press body. A sliding plate is slidably connected to the surface of each pair of fixed rods. Two first hinge seats are connected to the bottom end of each sliding plate. A hinge rod is hinged to the surface of each of the four first hinge seats. The four second hinge seats are respectively hinged to the four hinge rods. A slider is connected to the bottom end of each pair of second hinge seats. The four retraction springs are respectively sleeved on the outer side of the four fixed rods.

[0013] Furthermore, the surfaces of both slide plates are slidably attached to the inner side of the closed-type dual-point press body.

[0014] Furthermore, the two ends of each pair of the contraction springs are respectively connected to the inner side of the closed double-point press body and the top of each of the slide plates.

[0015] Furthermore, each of the two positioning components includes two limiting grooves, a connecting rod, and a composite outward expansion spring. All four limiting grooves are formed inside the body of the closed double-point press. Limiting blocks are slidably connected to the inner sides of the four limiting grooves. A positioning frame is connected to the surface of every two limiting blocks. Two positioning rods are connected to the bottom ends of the two positioning frames. Each connecting rod is respectively disposed inside each positioning frame. Each composite outward expansion spring is respectively sleeved on the outer side of each connecting rod.

[0016] Furthermore, the inner sides of each pair of sliders are slidably connected to the surface of each connecting rod.

[0017] Furthermore, each of the composite expansion springs has its two ends connected to the surfaces of each pair of sliders.

[0018] This utility model has the following beneficial effects:

[0019] This invention utilizes a sliding plate that slides along a fixed rod to facilitate the descent of the positioning frame as the closed-type double-point press body presses down. This allows the positioning rod to align with holes on the workpiece surface, thereby limiting the downward pressure on the workpiece's side. The hinge between the first and second hinge seats allows the hinge rod to tilt accordingly as the sliding plate rises and falls. The composite outward-expanding spring and the sliding slider adapt to the descent of the sliding plate, dispersing some of the downward pressure force while improving the stability of the positioning frame in pressing and positioning the workpiece, thus enhancing the stability of workpiece positioning. The contraction spring provides an upward lifting force to the sliding plate, causing the initial position of the positioning frame to separate from the worktable, facilitating the placement of the workpiece.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This utility model Figure 1 A magnified structural diagram at point A;

[0024] Figure 3 This utility model Figure 1 A magnified structural diagram at point B;

[0025] Figure 4 This is a schematic diagram of the front planar structure of the present invention;

[0026] Figure 5 This is one of the partial structural schematic diagrams of this utility model;

[0027] Figure 6 This is the second partial structural schematic diagram of this utility model.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Closed-type double-point press body; 2. Hinge assembly; 21. Fixed rod; 22. Slide plate; 23. First hinge seat; 24. Hinge rod; 25. Second hinge seat; 26. Slider; 27. Retraction spring; 3. Positioning assembly; 31. Limiting groove; 32. Limiting block; 33. Positioning frame; 34. Positioning rod; 35. Connecting rod; 36. Composite outward expansion spring; 4. Worktable. Detailed Implementation

[0030] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0031] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0032] Please see Figures 1-6 As shown, this utility model is a workpiece positioning device for a closed-type double-point press, including the closed-type double-point press body 1:

[0033] The surface of the closed-type double-point press body 1 is connected to a worktable 4, and two hinge components 2 and two positioning components 3 are respectively provided on the closed-type double-point press body 1.

[0034] The surfaces of the two positioning components 3 are connected to the surface of the closed double-point press body 1 for positioning the workpiece.

[0035] The surfaces of the two hinge components 2 are connected to the inner side of the closed double-point press body 1, so as to drive the two positioning components 3 to adjust vertically.

[0036] First, the workpiece to be processed is placed on the worktable 4. At this time, the bottom end of the positioning component 3 corresponds to the positioning hole on the surface of the workpiece. Then, the closed double-point press body 1 is driven to operate. The pressing structure on the closed double-point press body 1 moves down, which gradually pushes the hinge component 2 down, and then drives the positioning component 3 down, so that the positioning component 3 penetrates the positioning hole on the workpiece. At this time, the pressing and positioning force of the positioning component 3 on the workpiece is small. However, as the pressing pressure of the closed double-point press body 1 increases, the pressure of the positioning component 3 on the workpiece will also increase accordingly. That is, it can be understood that when the hinge component 2 is under pressure, the bottom end of the positioning component 3 is in contact with the top end of the workpiece, and the distance between the hinge component 2 and the positioning component 3 gradually decreases. Thus, the hinge component 2 and the positioning component 3 adapt to the pressing of the closed double-point press body 1 to process the workpiece, while gradually increasing the pressure on the workpiece positioning, thereby improving the stability of the workpiece positioning.

[0037] The hinge assembly 2 facilitates the downward movement of the positioning assembly 3 as the closed double-point press body 1 is pressed down, so that the positioning assembly 3 corresponds to the hole opened on the surface of the workpiece, thereby limiting the downward pressure on the side position of the workpiece. While dispersing part of the downward pressure force of the hinge assembly 2, it also improves the stability of the positioning assembly 3 in pressing and positioning the workpiece, thus improving the stability of the workpiece positioning.

[0038] In one embodiment, for the aforementioned hinge assembly 2, each of the two hinge assemblies 2 includes two fixed rods 21, two second hinge seats 25, and two retraction springs 27. The four fixed rods 21 are all disposed on the inner side of the closed double-point press body 1. A slide plate 22 is slidably connected to the surface of each pair of fixed rods 21. Two first hinge seats 23 are connected to the bottom end of each slide plate 22. A hinge rod 24 is hinged to the surface of each of the four first hinge seats 23. The four second hinge seats 25 are respectively hinged to the four hinge rods 24. A slider 26 is connected to the bottom end of each pair of second hinge seats 25. The four retraction springs 27 are respectively sleeved on the outer side of the four fixed rods 21.

[0039] First, the workpiece to be processed is placed on the worktable 4. At this time, the bottom end of the positioning component 3 corresponds to the positioning hole on the workpiece surface. Then, the closed-type double-point press body 1 is driven to operate. The downward pressing structure on the closed-type double-point press body 1 moves downward, thereby gradually pushing the two slide plates 22 downward, which in turn drives the positioning component 3 downward, so that the positioning component 3 penetrates the positioning hole on the workpiece. At this time, the downward positioning force of the positioning component 3 on the workpiece is small. However, as the downward pressure of the closed-type double-point press body 1 increases, the pressure of the positioning component 3 on the workpiece will also increase accordingly. At this time, the first hinge seat 23 and the second hinge seat 25... Under the hinge action, the slider 26 will gradually translate and separate, and the corresponding hinge rod 24 will gradually tilt. That is to say, when the slide plate 22 is pressed, the bottom end of the positioning component 3 is in contact with the top end of the workpiece, and the distance between the slide plate 22 and the positioning component 3 gradually decreases. This allows the slide plate 22 and the positioning component 3 to adapt to the processing of the workpiece by the closed double-point press body 1 while gradually increasing the pressure on the workpiece positioning, thereby improving the stability of the workpiece positioning. The contraction spring 27 provides the upward force for the slide plate 22, thereby separating the initial position of the positioning component 3 from the worktable 4, which facilitates the placement of the workpiece.

[0040] The sliding plate 22, which is slidably set with the fixed rod 21, facilitates the descent of the positioning component 3 as the closed double-point press body 1 is pressed down. This allows the positioning component 3 to correspond with the holes on the workpiece surface, thereby limiting the downward pressure on the side of the workpiece. The hinge action of the first hinge seat 23 and the second hinge seat 25 allows the hinge rod 24 to tilt accordingly as the sliding plate 22 rises and falls. The positioning component 3 and the sliding slider 26 adapt to the descent of the sliding plate 22, dispersing some of the downward pressure force of the sliding plate 22 while improving the stability of the positioning component 3 in pressing and positioning the workpiece, thus improving the stability of the workpiece positioning. The contraction spring 27 provides an upward lifting force for the sliding plate 22, thereby separating the initial position of the positioning component 3 from the worktable 4, which facilitates the placement of the workpiece.

[0041] In one embodiment, for the aforementioned slide plates 22, the surfaces of both slide plates 22 are slidably attached to the inner side of the closed double-point press body 1, thereby facilitating the improvement of the stability of the slide plates 22 moving vertically up and down.

[0042] In one embodiment, for the above-mentioned retraction springs 27, the two ends of each pair of retraction springs 27 are respectively connected to the inner side of the closed double-point press body 1 and the top of each slide plate 22, thereby facilitating the provision of an upward lifting force to the slide plate 22, thereby separating the initial position of the positioning frame 33 from the worktable 4, and thus facilitating the placement of the workpiece.

[0043] In one embodiment, for the positioning components 3 described above, each of the two positioning components 3 includes two limiting grooves 31, a connecting rod 35, and a composite outward expansion spring 36. The four limiting grooves 31 are all opened inside the closed double-point press body 1. The inner sides of the four limiting grooves 31 are slidably connected to limiting blocks 32. The surfaces of each pair of limiting blocks 32 are connected to positioning frames 33. The bottom ends of the two positioning frames 33 are connected to two positioning rods 34. Each connecting rod 35 is respectively disposed inside each positioning frame 33. Each composite outward expansion spring 36 is respectively sleeved on the outside of each connecting rod 35, thereby facilitating the positioning of the workpiece through the positioning frames 33 and positioning rods 34.

[0044] In one embodiment, for the aforementioned sliders 26, the inner sides of every two sliders 26 are slidably connected to the surface of each connecting rod 35, thereby facilitating the improvement of the stability of the horizontal movement of the sliders 26.

[0045] In one embodiment, for the aforementioned composite expansion spring 36, each of the two ends of the composite expansion spring 36 is connected to the surface of each pair of sliders 26, thereby pushing the corresponding two sliders 26 to separate, thereby assisting in raising the overall height of the positioning frame 33 and avoiding affecting the placement of the workpiece.

[0046] In summary, using the above-mentioned technical solution of this utility model, the workpiece to be processed is first placed on the worktable 4. At this time, the positioning rod 34 at the bottom of the positioning frame 33 corresponds to the positioning hole on the surface of the workpiece. Then, the closed double-point press body 1 is driven to operate. The downward pressing structure on the closed double-point press body 1 moves downward, thereby gradually pushing the two slide plates 22 downward, which in turn drives the positioning frame 33 and the positioning rod 34 downward, so that the positioning rod 34 penetrates the positioning hole on the workpiece. At this time, the downward positioning force of the positioning frame 33 on the workpiece is small. However, as the downward pressure of the closed double-point press body 1 increases, the pressure of the positioning frame 33 on the workpiece will also increase accordingly. At this time, the first hinge seat 23 and the second hinge seat 25 are hinged together. Under the action of the slider 26, the slider will gradually move and separate, and the corresponding hinge rod 24 will gradually tilt. This can be understood as the bottom end of the positioning frame 33 fitting with the top end of the workpiece when the slide plate 22 is pressed, and the distance between the slide plate 22 and the positioning frame 33 gradually decreases. This allows the slide plate 22 and the positioning frame 33 to adapt to the pressing of the closed double-point press body 1 to process the workpiece, while gradually increasing the pressure on the workpiece positioning, thereby improving the stability of the workpiece positioning. Furthermore, the sliding of the limit block 32 inside the limit groove 31 also improves the stability of the lifting and adjusting of the positioning frame 33. The contraction spring 27 provides the lifting force for the slide plate 22, thereby separating the initial position of the positioning frame 33 from the worktable 4, which facilitates the placement of the workpiece.

[0047] Through the above technical solution, the sliding plate 22, which is slidably set with the fixed rod 21, facilitates the descent of the positioning frame 33 as the closed double-point press body 1 is pressed down, so that the positioning rod 34 corresponds to the hole opened on the surface of the workpiece, thereby limiting the downward pressure on the side position of the workpiece. The hinge action of the first hinge seat 23 and the second hinge seat 25 facilitates the tilting of the hinge rod 24 as the sliding plate 22 rises and falls. The composite outward expansion spring 36 and the sliding slider 26 facilitate the descent of the sliding plate 22, dispersing part of the downward pressure force of the sliding plate 22 while improving the stability of the positioning frame 33 in pressing and positioning the workpiece, thereby improving the stability of the workpiece positioning. The contraction spring 27 provides an upward lifting force for the sliding plate 22, so that the initial position of the positioning frame 33 is separated from the worktable 4, which facilitates the placement of the workpiece.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A workpiece positioning device for a closed-loop two-point press, comprising the body of the closed-loop two-point press (1), characterized in that: The surface of the closed double-point press body (1) is connected to a worktable (4), and two hinge components (2) and two positioning components (3) are respectively provided on the closed double-point press body (1). The surfaces of the two positioning components (3) are connected to the surface of the closed double-point press body (1) for positioning the workpiece; The surfaces of the two hinge components (2) are connected to the inner side of the closed double-point press body (1) to drive the two positioning components (3) to adjust vertically.

2. The workpiece positioning device for a closed-type double-point press according to claim 1, characterized in that, Both of the hinge components (2) include two fixed rods (21), two second hinge seats (25) and two retraction springs (27). The four fixed rods (21) are all located on the inner side of the closed double-point press body (1). The surfaces of each pair of fixed rods (21) are slidably connected to a slide plate (22). The bottom end of each slide plate (22) is connected to two first hinge seats (23). The surfaces of the four first hinge seats (23) are hinged to hinge rods (24). The four second hinge seats (25) are respectively hinged to the four hinge rods (24). The bottom end of each pair of second hinge seats (25) is connected to a slider (26). The four retraction springs (27) are respectively sleeved on the outer side of the four fixed rods (21).

3. The workpiece positioning device for a closed-type double-point press according to claim 2, characterized in that, The surfaces of both slide plates (22) are in sliding contact with the inner side of the closed double-point press body (1).

4. The workpiece positioning device for a closed-type double-point press according to claim 2, characterized in that, The two ends of each of the two said contraction springs (27) are respectively connected to the inner side of the closed double-point press body (1) and the top of each of the said slide plates (22).

5. A workpiece positioning device for a closed-type double-point press according to claim 2, characterized in that, Both positioning components (3) include two limiting grooves (31), a connecting rod (35), and a composite expansion spring (36). The four limiting grooves (31) are all opened inside the closed double-point press body (1). The inner side of each of the four limiting grooves (31) is slidably connected to a limiting block (32). The surface of each pair of limiting blocks (32) is connected to a positioning frame (33). The bottom end of each of the two positioning frames (33) is connected to two positioning rods (34). Each connecting rod (35) is respectively set inside each positioning frame (33). Each composite expansion spring (36) is respectively sleeved on the outside of each connecting rod (35).

6. A workpiece positioning device for a closed-type double-point press according to claim 5, characterized in that, The inner side of each pair of sliders (26) is slidably connected to the surface of each connecting rod (35).

7. A workpiece positioning device for a closed-type double-point press according to claim 5, characterized in that, Each of the composite expansion springs (36) has its two ends connected to the surfaces of each pair of sliders (26).

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