Single-top cylinder rotary multi-top rod base device without fixation

Abstract

The utility model provides a kind of single top cylinder turns into no fixed multi-top rod base device, including lower mould plate, multi-top cylinder mechanism and single top cylinder mechanism;Multi-top cylinder mechanism includes base plate, multi-top cylinder bottom plate, rectangular guide pillar and top rod unit, wherein: rectangular guide pillar, it is four, it is four corner arrangement, lower end fixedly connected base plate, top end fixedly connected lower mould plate, and its upper limit is set with multi-top cylinder bottom plate;The top of multi-top cylinder bottom plate is provided with top rod unit, and bottom is fixedly connected with the top end of single top cylinder mechanism;And the top end of each top rod unit is slidably arranged in limiting through-hole, with single top cylinder mechanism carries out synchronous jacking action.The utility model is through the sliding cooperation of four rectangular guide pillars and multi-top cylinder bottom plate, combined with the structure of single top cylinder driving multi-top rod synchronous jacking, effectively solve the problem that existing press bench top cylinder area is too small, die structure is limited, can be used for larger parts drawing die.

Description

Technical Field

[0001] This utility model relates to the field of cold stamping steel plate mold structure, and in particular to a single-cylinder rotating multi-rod base device. Background Technology

[0002] In the field of cold stamping steel sheet die processing, the ejection mechanism design of the press table directly affects the adaptability of the die structure and the processing range. Currently, small table presses under 315 tons generally adopt a single ejector cylinder structure, whose ejection range is usually limited to drawing die applications within 200mm. This single ejector cylinder structure has obvious limitations: on the one hand, the die support rod arrangement space is strictly constrained by the position of the ejector cylinder, resulting in reduced die design freedom; on the other hand, when processing larger parts (such as those over 800mm), the single ejector cylinder structure cannot provide sufficient ejection support area, severely restricting the functional expansion of the die.

[0003] Currently, traditional solutions typically employ fixed multi-ejector structures, but this design suffers from fixed installation positions and a lack of flexibility. Especially when adapting to molds of different sizes, the fixed structure hinders rapid adjustments, leading to inefficient mold changeovers. Furthermore, the guiding stability of ejector units in existing technologies is insufficient, making them prone to skewing during the lifting process and affecting machining accuracy. The parallelism and support stability issues of the ejection mechanism have also long plagued mold designers, with these problems being particularly pronounced when machining large parts. Utility Model Content

[0004] This utility model addresses the problems of the small area of ​​the top cylinder on the worktable of existing presses and the limitation of mold structure by providing a single top cylinder to a multi-rod base without fixed position. This device can transform the single top cylinder into a multi-rod ejector without position restrictions, which can be used for drawing dies of larger parts.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution:

[0006] A single-cylinder rotating multi-cylinder base device includes a lower template, a multi-cylinder mechanism, and a single-cylinder mechanism; the multi-cylinder mechanism includes a base plate, a multi-cylinder base plate, a rectangular guide post, and a push rod unit, wherein:

[0007] The rectangular guide post is a columnar structure with a rectangular cross-section. There are four of them, arranged at the four corners. The lower end is fixedly connected to the base plate, and the top end is fixedly connected to the lower template. The multi-cylinder bottom plate that can slide up and down is provided for limiting its position.

[0008] The top of the multi-cylinder base plate is vertically provided with several detachably connected push rod units, and the bottom is fixedly connected to the top of the single-cylinder mechanism; and the top of each push rod unit is slidably disposed in the corresponding limiting through hole on the lower template, and performs synchronous lifting action with the single-cylinder mechanism.

[0009] Preferably, the lower template has four sets of first mounting holes arranged at the four corners for installing the rectangular guide post; each set of first mounting holes consists of two holes arranged in a staggered manner, corresponding to the diagonal positions of the top end face of the rectangular guide post.

[0010] Preferably, the lower template has a plurality of limiting through holes arranged corresponding to each of the top rod units, and the top opening of the limiting through holes is provided with a limiting groove for limiting the top end of the top rod unit.

[0011] Preferably, the base plate is a square plate structure, with a second mounting hole at its center for limiting the installation of the single top rod on the single top cylinder mechanism, and four sets of third mounting holes for fixing the bottom end of the rectangular guide column.

[0012] Preferably, the four sets of third mounting holes are arranged symmetrically on an axis; and each set of third mounting holes consists of two holes arranged in a staggered manner, corresponding to the diagonal positions of the bottom end face of the rectangular guide post.

[0013] Preferably, the multi-cylinder bottom plate is a square plate structure with four rectangular guide holes arranged at the four corners for limiting the installation of the corresponding rectangular guide posts, and the top is detachably threaded to the lower end of each push rod unit.

[0014] Preferably, the rectangular guide post is a columnar structure with a rectangular cross-section. Its lower end is fixedly mounted on the base plate by first locking screws in two corresponding third mounting holes, and its top end is fixedly mounted on the lower template by second locking screws in two corresponding first mounting holes.

[0015] Preferably, a plurality of the push rod units are arranged in a ring at intervals, with their lower ends threaded onto the bottom plate of the multi-push cylinder, and a limiting block that cooperates with the limiting groove is provided on the outer periphery of the top end.

[0016] Preferably, the multi-cylinder mechanism further includes a first side support plate and a second side support plate respectively fixedly disposed between the lower template and the base plate, wherein:

[0017] There are two first side support plates and two second side support plates, arranged in a left-right and front-back pattern, and they are fixed to each other with screws to form a square support frame that is connected end to end. The inner cavity of the square support frame is provided with the multi-cylinder bottom plate, rectangular guide post and push rod unit.

[0018] More preferably, the multi-cylinder mechanism further includes a first auxiliary support column and a second auxiliary support column, wherein:

[0019] The first auxiliary support column consists of several columns, which are installed on the outer wall of the first side support plate with screws spaced at left and right intervals, and their top and bottom are respectively connected to the lower template and the base plate;

[0020] The second auxiliary support column consists of several columns, which are installed on the outer wall of the second side support plate with screws spaced at left and right intervals, and their top and bottom are respectively connected to the lower template and the base plate.

[0021] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0022] The single-cylinder to multi-ejector base device provided by this utility model achieves flexible adjustment of the ejector arrangement and stable guidance during the lifting process through the sliding cooperation of four rectangular guide pillars with the multi-ejector base plate and the structure of single-cylinder driving multi-ejector synchronous lifting. It has the advantages of increasing the ejection support area, enhancing mold adaptability and improving processing accuracy. Moreover, the number and position of ejector units can be flexibly adjusted as needed, effectively solving the problems of the small area of ​​the ejector cylinder on the existing press worktable and the limitation of the mold structure. It can transform the single-cylinder into a multi-ejector without position restrictions, which can be used for drawing dies of larger parts, such as drawing dies of parts larger than 800mm, and has a wider range of applications. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of a single-cylinder rotating multi-rod base device of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of a single-cylinder rotating multi-rod base device according to the present invention. Figure 1 ;

[0025] Figure 3 This is a three-dimensional structural diagram of a single-cylinder rotating multi-rod base device according to the present invention. Figure 2 ;

[0026] Figure 4 This is a top view schematic diagram of a single-cylinder rotating multi-rod base device according to the present invention;

[0027] Figure 5 This utility model Figure 4 The diagram shows a cross-sectional view of section AA in a single-cylinder rotating multi-rod base device.

[0028] Figure 6 This utility model Figure 4The diagram shows a cross-sectional view of section BB in a single-cylinder rotating multi-rod base device.

[0029] Figure 7 This utility model Figure 4 The diagram shows a cross-sectional view of section CC in a single-cylinder rotating multi-rod base device.

[0030] Figure 8 This is a three-dimensional sectional view of a single-cylinder rotating multi-rod base device according to the present invention. Figure 1 ;

[0031] Figure 9 This utility model Figure 8 The diagram shows a partially enlarged structural schematic of part A in a single-cylinder rotating multi-rod base device.

[0032] Figure 10 This is a three-dimensional sectional view of a single-cylinder rotating multi-rod base device according to the present invention. Figure 2 ;

[0033] The reference numerals in the attached drawings are as follows: 100-lower template, 101-first mounting hole, 102-limiting through hole, 103-limiting groove; 200-multi-cylinder mechanism, 210-base plate, 211-second mounting hole, 212-third mounting hole, 220-first side support plate, 230-second side support plate, 240-multi-cylinder base plate, 241-rectangular guide hole, 250-rectangular guide post, 251-first locking screw, 252-second locking screw; 260-push rod unit, 261-limiting stop; 270-first auxiliary support column, 280-second auxiliary support column; 300-single-cylinder mechanism. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the field of cold stamping dies, the insufficient area of ​​the ejector cylinder on the press worktable has long been a problem. The traditional single ejector cylinder structure limits the range of die support rod arrangement and cannot meet the processing requirements of large-sized parts. Taking the drawing die for automotive body panels as an example, when the projected size of the part exceeds 200mm, the single-point ejection structure is prone to uneven material flow, causing wrinkling or cracking defects.

[0037] To address these issues, researchers discovered that the limited ejection range of a single-cylinder ejector was fundamentally due to a single force transmission path and insufficient support area. By analyzing the force distribution patterns of the mold, they proposed transforming the concentrated lifting force into a multi-point distributed output. After numerous experimental verifications, the study found that using four rectangular guide pillars to construct a spatial frame ensured both lifting stability and allowed for free placement of the ejector pins.

[0038] In some embodiments, such as Figure 1 , Figure 3 , Figures 5 to 7 As shown, this application proposes a single-cylinder rotating multi-rod base device including a lower template 100, a multi-cylinder mechanism 200, and a single-cylinder mechanism 300. The multi-cylinder mechanism 200 includes a base plate 210, a multi-cylinder bottom plate 240, four rectangular guide pillars 250, and several detachably connected rod units 260. The four rectangular guide pillars 250, with rectangular cross-sections, are arranged at the four corners, with their lower ends connected to the base plate 210 and their top ends connected to the lower template 100. The multi-cylinder bottom plate 240 is slidably mounted on the rectangular guide pillars 250, with several rod units 260 vertically mounted on its top and connected to the single-cylinder mechanism 100 at its bottom. The top ends of the rod units 260 are slidably positioned within the limiting through holes 102 of the lower template 100, allowing them to be synchronously lifted with the single-cylinder mechanism 300.

[0039] The rectangular guide post 100 is a guide component with anti-torsional properties, whose four corners are arranged to form stable spatial support and limiting. The push rod unit 260 is a force transmission and actuation component, which can be implemented using a cylindrical push rod. The ring-shaped distribution design can cover a larger ejection area. The limiting through hole 102 is a through hole structure for guiding and restraining, which can be implemented using a through hole with an inner diameter 0.5 mm larger than the diameter of the push rod unit 260, ensuring both freedom of movement and limiting horizontal deviation.

[0040] Four rectangular guide pillars 250 and the lower template 100 form a rigid support system. The number and position of the push rod units 260 can be flexibly set as needed. The cylinder on the single-push-cylinder mechanism 300 pushes the multi-push-cylinder base plate 240 to move up and down along the rectangular guide pillars 250. When the multi-push-cylinder base plate 240 rises, the ring-shaped push rod units 260 are pushed out synchronously, and their tops move linearly within the limiting through holes 102. The cross-sectional shape of the rectangular guide pillars 250 effectively resists the torque generated during the lifting process, and the support area formed by the four corners is larger than that of traditional single-column support and limiting structures. The push rod units 260 achieve overall linkage through a detachable threaded connection with the multi-push-cylinder base plate 240, ensuring the consistency of movement of each ejection point.

[0041] Compared to existing technologies, traditional solutions directly use a single ejector cylinder 300 for ejection, which suffers from drawbacks such as small support area and weak torsional resistance. This solution uses a multi-ejector cylinder mechanism 200, constructed with four rectangular guide pillars 250 and multiple ejector rod units 260, as a transition device for the single ejector cylinder 300, expanding the ejector rod distribution range to an 800mm diameter area. Compared to existing single-ejector cylinder ejection structures, this solution allows for flexible adjustment of the number and position of ejector rod units 260 on the multi-ejector cylinder base plate 240, effectively solving the problems of insufficient ejector cylinder area and limited mold structure in existing press worktables. It transforms the single ejector cylinder into a multi-support rod ejection system without positional limitations, making it suitable for drawing dies for parts larger than 800mm and thus having a wider range of applications.

[0042] In some of its embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, this application further proposes four sets of first mounting holes 101 arranged at the four corners on the lower template 100 for mounting rectangular guide pillars 250. Each set of first mounting holes 101 consists of two holes staggered left and right, corresponding to the diagonal positions of the top end face of the rectangular guide pillar 250. The four sets of first mounting holes 101 arranged at the four corners refer to the mounting hole groups set in the four corner areas of the lower template 101. The symmetrically distributed four sets of mounting holes enable the four rectangular guide pillars 250 to form a rectangular support system. The two holes staggered left and right refer to two holes in the same mounting hole group that are staggered horizontally. Specifically, a diagonally arranged threaded hole structure can be used. The double-hole staggered design allows the top end face of a single guide pillar to form a diagonal locking, dispersing the stress concentration at the top force point.

[0043] In addition, such as Figure 2 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, this application further proposes that the lower template 100 has a plurality of limiting through holes 102 arranged corresponding to each top rod unit 260, and the top opening of the limiting through hole 102 is provided with a limiting groove 103 for limiting the top end of the top rod unit 260. The limiting through hole 102 refers to a through hole structure formed on the lower template 100 and slidingly engaging with the top end of the top rod unit 260. Specifically, it can be a circular through hole with an inner diameter slightly larger than the outer diameter of the top rod unit 260, forming a clearance fit to provide a guiding function. The limiting groove 103 refers to the annular groove structure set at the top opening of the limiting through hole 102. Specifically, it can be achieved by machining an annular groove on the inner wall of the through hole. A limiting step is formed at the bottom of the groove. The inner diameter of the groove sidewall is slightly larger than the outer diameter of the limiting stop at the top of the push rod unit 260. When the push rod unit 260 moves down to the lowest stroke with the single push cylinder mechanism 300, the limiting stop 261 at the top of the push rod unit 260 moves down to the limiting groove 103 and is locked by the limiting step, forming a mechanical block to limit the minimum downward stroke of the push rod unit.

[0044] The top end of each ejector pin unit 260 is inserted into the corresponding limiting through hole 102 and slides along the axis of the through hole under the drive of the single ejector cylinder mechanism 300. The gap between the inner wall of the limiting through hole 102 and the ejector pin unit 260 is controlled within a preset range to ensure that the ejector pin unit 260 can only move in the vertical direction and will not shift laterally. When several ejector pin units 260 are gradually lifted to a preset height, their top ends disengage from the limiting groove 103 and rise synchronously, cooperating with the template to perform drawing on the part. When several ejector pin units 260 are synchronously lowered to the lowest stroke with the single ejector cylinder mechanism 300, the further lifting action of the ejector pin unit 260 is mechanically blocked by the limiting step at the bottom of the limiting groove 103, thereby preventing it from completely detaching from the lower template.

[0045] In some of these embodiments, such as Figures 2 to 4 and Figure 10 As shown, this application further proposes that the base plate 210 is a square plate structure, with a second mounting hole 211 at its center for limiting the installation of the single-push rod on the single-push cylinder mechanism 300, and four sets of third mounting holes 212 for fixing the bottom end of the rectangular guide post 250. The square plate structure refers to a flat plate with a regular geometric shape, such as one formed by cutting steel plates, which can provide a symmetrical mounting base for the rectangular guide post 250. The second mounting hole 211 is a through hole located at the geometric center of the base plate 210, for example, with a diameter slightly larger than the outer diameter of the single-push rod, achieving axial positioning of the single-push rod 300 through clearance fit. The third mounting holes 212 are connecting holes distributed in the four corner areas of the base plate 210, for example, each set containing two threaded holes, used to diagonally lock the bottom end of the rectangular guide post 250 onto the base plate 210 with bolts.

[0046] The square base plate 210 supports the rectangular guide columns 250, lower template 100, multi-cylinder base plate 240, and push rod units 260 through planar support, avoiding deformation caused by local stress concentration. The second mounting hole 211 at the center is coaxially fitted with the single push rod 300, ensuring that the transmission path of the lifting force is distributed along the center line of the device. The four sets of third mounting holes 212 are arranged symmetrically, so that the bottom ends of the four rectangular guide columns 250 are fixed diagonally by bolts, forming a stable four-point support structure, enhancing the connection rigidity between the guide columns 250 and the base plate 210, and ensuring that each push rod unit 260 maintains a vertical movement trajectory during synchronous lifting.

[0047] Furthermore, it is worth noting that this application further proposes four sets of third mounting holes 212 arranged axially symmetrically, with each set consisting of two holes staggered left and right, corresponding to diagonal positions on the bottom end face of the rectangular guide post 250. The axially symmetrical arrangement means that the four sets of mounting holes 212 form a mirror-symmetrical distribution within the plane of the base plate 210. This can be achieved through left-right symmetry and / or front-back symmetry, creating a spatially symmetrical constraint network for each guide post mounting point. The two staggered mounting holes 212 refer to two non-collinear positioning holes within the same guide post mounting area. This can be achieved by using a hole structure staggered along the long axis of the guide post end face, forming a diagonal double-point fixing mode.

[0048] In some of these embodiments, such as Figures 5 to 10 As shown, this application further proposes that the multi-cylinder base plate 240 is a square plate structure with four rectangular guide holes 241 arranged at the four corners for limiting the installation of corresponding rectangular guide pillars 250. The top of each guide hole is detachably threaded to the lower end of each ejector pin unit 260. The square plate structure refers to a rigid plate with a symmetrical geometric shape, which can be achieved by cutting steel plates. The rectangular guide holes 241 are through holes that match the cross-sectional shape of the rectangular guide pillars 250, with their inner walls forming surface contact with the outer surface of the guide pillars, thus limiting the horizontal offset or torsion of the multi-cylinder base plate 240 during sliding. The detachable threaded connection means that the lower end of the ejector pin unit is threaded into the corresponding threaded hole on the multi-cylinder base plate 240 for fixed installation. It can be flexibly installed and disassembled as needed to adjust the number and position of the ejector pin units 260 on the multi-cylinder base plate 240, or to replace ejector pins of different lengths for use in drawing dies of larger parts.

[0049] In some of these embodiments, such as Figures 5 to 10As shown, this application further proposes that the rectangular guide post 250 is a columnar structure with a rectangular cross-section. Its lower end is fixedly mounted on the base plate 210 by two first locking screws 251 corresponding to the third mounting holes 212, and its top end is fixedly mounted on the lower template 100 by two second locking screws 252 corresponding to the first mounting holes 101. The columnar structure with a rectangular cross-section refers to the rectangular guide post 250 having a non-square rectangular structure where the longer side is greater than the shorter side; specifically, it can be a cuboid structure where the longer side is 1.5-2 times the length of the shorter side. The first locking screws 251 are fasteners used to connect the lower end of the guide post to the base plate 210, and can be hexagonal head screws. Two screws are installed at opposite corners on the bottom end face of the guide post to form a symmetrical locking force. Similarly, the second locking screw 252 is a fastener used to connect the top of the guide post to the lower template 100. It is made of the same specification as the first locking screw 251. The two screws are installed at opposite positions on the top end face of the guide post to achieve bidirectional symmetrical fixing.

[0050] The lower end of the rectangular guide post 250 is connected to the base plate 210 by two diagonally arranged first locking screws 251, forming a symmetrical constraint force field to prevent the rectangular guide post 250 from deflecting under force. The top end of the rectangular guide post 250 is connected to the lower template 100 by second locking screws 252 arranged diagonally, forming a symmetrical fixing structure. The long side of the rectangular guide post 250 with a rectangular cross-section is aligned with the direction of the diagonal line connecting the screws, maximizing the bending section modulus of the guide post and effectively suppressing deformation.

[0051] In some of these embodiments, such as Figure 2 , Figure 4 , Figures 5 to 8 As shown, this application further proposes a plurality of push rod units 260 arranged in a ring-shaped interval, with their lower ends threadedly installed in corresponding threaded holes on the multi-cylinder base plate 240, and a limiting stop 261 provided on the outer periphery of the top end to cooperate with the limiting groove 103. Here, "ring-shaped interval arrangement" means that the push rod units 260 are evenly distributed around the central axis along a certain circular or non-circular trajectory, forming a symmetrical distribution structure front-to-back or left-to-right. "Threaded installation" refers to the threaded connection pair formed by the detachable threaded connection between the lower end of the push rod unit 260 and the multi-cylinder base plate. The limiting stop 261 is a protruding structure provided on the outer edge of the top end of the push rod unit 260, which can be implemented as a ring-shaped boss or a split snap-fit ​​structure, forming a mechanical stop through contact with the upper limiting groove 102 of the lower template 100.

[0052] The push rod units 260 are arranged in a radial support array at an annular interval. When the single-cylinder mechanism 300 drives the multi-cylinder base plate 240, each push rod unit 260 synchronously transmits the lifting force, making the force evenly distributed in the circumferential plane. The lower end of the push rod unit 260 is connected to the multi-cylinder base plate 240 by a threaded installation, which facilitates installation, disassembly, replacement, and maintenance while ensuring the stability of the force transmission path during the lifting process. The limiting block 261 at the top of the push rod unit 260 forms a planar contact with the limiting groove 103 on the lower template 100, and mechanical interference restricts the push rod unit 260 from continuing to move at the end of the descent stroke.

[0053] In some of these embodiments, such as Figure 2 , Figure 3 , Figure 8 and Figure 10 As shown, to improve the stability of the structure between the lower template 100, the base plate 210, and the rectangular guide post 250, this application further proposes that the multi-cylinder mechanism 200 also includes a first side support plate 220 and a second side support plate 230 respectively fixedly disposed between the lower template 100 and the base plate 210. There are two first side support plates 220 and two side support plates 230, arranged left-right and front-back, and connected end-to-end by screws to form a square support frame. The inner cavity of the square support frame is provided with a multi-cylinder base plate 240, a rectangular guide post 250, and a top rod unit 260. The first side support plate 220 and the second side support plate 230 are flat plates with regular geometric shapes, such as square steel plates or square aluminum plates, serving a supporting and protective function.

[0054] This solution constructs a support frame by adding a first side support plate 220 and a second side support plate 230 at four side positions between the lower template 100 and the base plate 210. This frame provides a certain amount of concealed installation space for the internal multi-cylinder base plate 240, rectangular guide column 250, and push rod unit 260, preventing them from being directly exposed to the outside. This avoids the multi-cylinder base plate 240 and push rod unit 260 from being affected by external dust, ensuring stability during vertical lifting and lowering, and improving production safety.

[0055] In addition, such as Figure 2 , Figure 3 , Figure 8 and Figure 10As shown, this application further proposes that the multi-cylinder mechanism also includes a first auxiliary support column 270 and a second auxiliary support column 280. The first auxiliary support column 270 consists of several columns, which are installed on the outer wall of the first side support plate 220 at left-right intervals using screws, and their tops and bottoms are respectively connected to the lower template 100 and the base plate 210. The second auxiliary support column 280 consists of several columns, which are installed on the outer wall of the second side support plate 230 at left-right intervals using screws, and their tops and bottoms are respectively connected to the lower template 100 and the base plate 210. The first auxiliary support column 270 and the second auxiliary support column 280 are rigid support members extending longitudinally along the outer side of the support plate. Specifically, they can be rectangular cross-section metal columns fixedly connected to the outer wall of the side support plate using screws. Their tops and bottoms are rigidly connected to the lower template 100 and the base plate 210 by welding or bolts, respectively, to further improve the structural stability of the square support frame.

[0056] Combination Figures 1 to 10 As shown, this single-ejector cylinder to multi-ejector base device achieves flexible adjustment of the ejector arrangement and stable guidance during the lifting process by using four rectangular guide pillars 250 slidingly engaged with the multi-ejector cylinder base plate 240, combined with the structure of the single-ejector cylinder 300 driving multiple ejector rod units 260 to lift synchronously. This offers advantages such as increased ejection support area, enhanced mold adaptability, and improved machining accuracy. Furthermore, in practical applications, the number, position, or length of the ejector rod units 260 can be flexibly adjusted according to the workpiece process requirements, effectively solving the problems of insufficient ejector cylinder area and limited mold structure in existing press worktables. It transforms a single-ejector cylinder into a multi-ejector system with no positional limitations, suitable for drawing dies of parts over 800mm in diameter.

[0057] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0058] Secondly, the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0059] Finally, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A single-cylinder rotating multi-rod base device, characterized in that, It includes a lower template (100), a multi-cylinder mechanism (200), and a single-cylinder mechanism (300); the multi-cylinder mechanism (200) includes a base plate (210), a multi-cylinder base plate (240), a rectangular guide post (250), and a push rod unit (260), wherein: The rectangular guide post (250) is a columnar structure with a rectangular cross-section. There are four of them, arranged at the four corners. The lower end is fixedly connected to the base plate (210), and the top end is fixedly connected to the lower template (100). The multi-cylinder base plate (240) that can slide up and down is provided for limiting its position. The top of the multi-cylinder base plate (240) is vertically provided with several detachably connected push rod units (260), and the bottom is fixedly connected to the top of the single-cylinder mechanism (300); and the top of each push rod unit (260) is slidably disposed in the corresponding limiting through hole (102) on the lower template (100), and performs synchronous lifting action with the single-cylinder mechanism (300).

2. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The lower template (100) has four sets of first mounting holes (101) arranged at the four corners for installing the rectangular guide post (250); each set of first mounting holes (101) consists of two holes arranged staggered left and right, corresponding to the diagonal positions of the top end face of the rectangular guide post (250).

3. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The lower template (100) is provided with a plurality of limiting through holes (102) arranged corresponding to each of the top rod units (260), and the top opening of the limiting through hole (102) is provided with a limiting groove (103) for limiting the top end of the top rod unit (260).

4. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The base plate (210) is a square plate structure, with a second mounting hole (211) at its center for limiting the installation of the single top rod on the single top cylinder mechanism (300), and four sets of third mounting holes (212) for fixing the bottom end of the rectangular guide post (250).

5. The single-cylinder rotating multi-rod base device according to claim 4, characterized in that, The four sets of third mounting holes (212) are arranged symmetrically on the axis; and each set of third mounting holes (212) consists of two holes arranged in a staggered manner, corresponding to the diagonal positions of the bottom end face of the rectangular guide post (250).

6. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The multi-cylinder base plate (240) is a square plate structure with four rectangular guide holes (241) arranged at the four corners for limiting the installation of the corresponding rectangular guide post (250), and the top is detachably threaded to the lower end of each of the push rod units (260).

7. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The rectangular guide post (250) is a columnar structure with a rectangular cross-section. Its lower end is fixedly installed on the base plate (210) by the first locking screw (251) in two corresponding third mounting holes (212), and its top end is fixedly installed on the lower template (100) by the second locking screw (252) in two corresponding first mounting holes (101).

8. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, Several of the aforementioned push rod units (260) are arranged in a ring at intervals, with their lower ends threaded onto the multi-pump cylinder base plate (240), and a limiting stop (261) that cooperates with the limiting groove (103) is provided on the outer periphery of the top end.

9. The single-cylinder rotating multi-rod base device according to claim 1, characterized in that, The multi-cylinder mechanism (200) further includes a first side support plate (220) and a second side support plate (230) respectively fixedly disposed between the lower template (100) and the base plate (210), wherein: There are two first side support plates (220) and two second side support plates (230), arranged in a left-right and front-back pattern, and they are fixedly connected to each other with screws to form a square support frame that is connected end to end. The inner cavity of the square support frame is provided with the multi-cylinder bottom plate (240), rectangular guide post (250) and push rod unit (260).

10. The single-cylinder rotating multi-rod base device according to claim 9, characterized in that, The multi-cylinder mechanism (200) further includes a first auxiliary support column (270) and a second auxiliary support column (280), wherein: The first auxiliary support column (270) consists of several columns, which are installed on the outer side wall of the first side support plate (220) with screws spaced at left and right intervals, and their top and bottom are respectively connected to the lower template (100) and the base plate (210). The second auxiliary support column (280) consists of several columns, which are installed on the outer side wall of the second side support plate (230) with screws spaced at left and right intervals, and their top and bottom are respectively connected to the lower template (100) and the base plate (210).

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