A structure for preventing the ejection of a die frame by a die plate inclined oil cylinder

Abstract

The application discloses a structure for preventing the backward movement of a die frame of a draw plate mold after the die frame is ejected by an oil cylinder, which is arranged on the draw plate mold and used for preventing the backward movement of the die frame after the mold is opened. The draw plate mold comprises a bottom plate, a rear die frame, a front die frame, a locking machine, a compression block fixing block, a compression block, a spring, a reset block and a stop block. The bottom plate is provided with sliding rails extending towards the rear die frame. The rear die frame is in sliding connection with the sliding rails. The rear die frame is further provided with an oil cylinder obliquely. The oil cylinder is connected with a ejector plate extending into the bottom plate. The front die frame is provided with the locking machine extending to the upper side of the rear die frame. The locking machine is in releasable connection with the rear die frame. The compression block fixing block is arranged on the rear die frame. The compression block is arranged in the compression block fixing block in a compressible manner through the spring. One end of the reset block is connected with the front die frame, and the other end of the reset block extends to the upper side of the compression block and is used for compressing the compression block. The end of the reset block is provided with a slot. One end of the stop block is connected with the bottom plate, and the other end of the stop block extends to the upper side of the compression block and is inserted into the slot.

Description

Technical Field

[0001] The present invention relates to the technical field of moulds, and in particular to a structure for preventing a spring plate mould from being ejected from a mould frame by an oblique oil cylinder and then retreating. Background Art

[0002] When opening the spring plate mold, the rear mold frame and the front mold frame are generally required to move together for a certain distance before the rear mold frame and the front mold frame can be opened. Since the rear mold frame moves together with the front mold frame for a certain distance, the rear mold frame and the bottom plate of the rear mold are separated. At this time, when the oblique part on the spring plate mold is ejected by the oil cylinder, the rear mold frame will be at risk of retreating toward the bottom plate. In this case, it is usually necessary to set a spring between the rear mold frame and the fixed bottom plate of the rear mold to support the rear mold frame and prevent it from retreating.

[0003] However, placing a spring between the rear mold frame and the rear mold base plate makes it inconvenient for the spring fitter to install it. In addition, it is difficult to disassemble and assemble the mold when the spring has a problem and needs to be replaced. The main problem is still the mold. If it is pushed out obliquely by a cylinder, the force between the cylinder and the spring is difficult to calculate. When the cylinder force is too large and exceeds the compression force of the spring, the rear mold frame will still be at risk of moving backward, resulting in mold instability. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems of the existing method of preventing the rear mold frame from "recoiling" by placing a spring between the rear mold frame and the rear mold bottom plate, and to propose a structure for preventing the mold frame from recoiling when the spring plate mold is ejected obliquely by the cylinder. The purpose is to solve the problem that the rear mold frame "recoils" when the spring plate mold is ejected obliquely by the cylinder, thereby avoiding the problem of instability of the mold.

[0005] To achieve the above object, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a structure for preventing the spring plate mold from being pushed out of the mold frame obliquely by the oil cylinder and then retreating. The anti-retreat structure is provided on the spring plate mold to prevent the rear mold frame in the spring plate mold from retreating and hitting the bottom plate after the mold is opened, thereby causing mold instability and affecting product molding.

[0007] Wherein, the spring plate mold includes the following:

[0008] a bottom plate, on which a slide rail extending toward the rear mold frame is provided;

[0009] A rear mold frame is slidably connected to the slide rail to achieve a closed or open state between the rear mold frame and the bottom plate; an oil cylinder is obliquely provided on the rear mold frame, and an output end of the oil cylinder is connected to an ejector plate, and the ejector plate extends into the bottom plate;

[0010] And the front mold frame, which is provided with a buckle machine; one end of the buckle machine is connected to the front mold frame, and the other end extends above the rear mold frame and forms a detachable connection with the rear mold frame, while the buckle machine and the slide rail remain in sliding connection; after the buckle machine is connected with the rear mold frame, the front mold frame and the rear mold frame form a closed state, and after being detached, they form an open state;

[0011] Wherein, the anti-backoff structure comprises: a pressing block fixing block, a pressing block, a spring, a reset block and a stop block; the pressing block fixing block is provided on the rear mold frame, the pressing block is provided in the pressing block fixing block and can be compressed by the spring (when compressed, the pressing block is hidden in the pressing block fixing block, and when not compressed, the pressing block protrudes from the pressing block fixing block); one end of the reset block is connected to the front mold frame, and the other end extends above the pressing block to compress the pressing block; the extension end of the reset block is also provided with a slot; one end of the stop block is connected to the bottom plate, and the other end extends above the pressing block and is inserted into the slot.

[0012] Further, a structure for preventing the ejection of the mold frame by the oblique oil cylinder: a first groove is provided on the bottom plate for accommodating the ejector plate.

[0013] Further, a structure for preventing the ejection of the mold frame by the oblique oil cylinder: a second groove is provided on the rear mold frame for accommodating the ejector plate.

[0014] Further, a structure for preventing the ejection of the mold frame by the oblique oil cylinder: the buckle machine is hinged to the front mold frame.

[0015] Further, a structure for preventing the ejection of the mold frame by the oblique oil cylinder: the ejector plate mold further comprises a detaching structure for detaching the buckle machine from the rear mold frame; the detaching structure comprises: a connecting rod and a protrusion, the connecting rod is provided on the buckle machine, and the protrusion is provided in the slide rail; the connecting rod is slidingly connected to the slide rail, and the protrusion is lifted by the connecting rod to detach the buckle machine.

[0016] Further, a structure for preventing the ejection of the mold frame by the oblique oil cylinder: the anti-backoff structure further comprises: a stop block; the stop block is provided above the pressing block fixing block, and one end of the reset block extends between the stop block and the pressing block fixing block.

[0017] Further, a structure for preventing the backward movement of the rear die frame when the inclined oil cylinder pushes out the die frame: the pressing block fixing block, the reset block, the stop block and the stopper are fixed and connected by fixing screws. Specifically, the pressing block fixing block, the reset block, the stop block and the stopper are fixed and connected to the rear die frame, the front die frame, the bottom plate and the rear die frame by fixing screws.

[0018] Further, a structure for preventing the backward movement of the rear die frame when the inclined oil cylinder pushes out the die frame: the pressing block and / or the reset block are provided with inclined surfaces to compress the reset block to the pressing block. Specifically, when the front die frame, the rear die frame and the bottom plate are closed, the end of the reset block extends above the pressing block fixing block. At this time, the inclined surfaces provided on the pressing block and / or the reset block can realize the compression of the pressing block to the inside of the pressing block fixing block by the reset block, and at the same time, the stop block is inserted into the slot, and at this time, the stop block is also above the pressing block, and the pressing block is compressed.

[0019] Further, a structure for preventing the backward movement of the rear die frame when the inclined oil cylinder pushes out the die frame: the pressing block and the reset block are respectively provided with inclined surfaces that cooperate with each other.

[0020] The beneficial effects of the present application are:

[0021] (1) The structure designed by the present application to prevent the backward movement of the rear die frame not only has a solid and reliable structure, but also can effectively prevent the backward movement of the rear die frame when the inclined oil cylinder pushes out the die after opening the mold, ensuring the stability of the mold during production and not affecting the product forming.

[0022] (2) The anti-backward movement structure designed by the present application is arranged on the periphery of the ejector plate die, which is convenient to replace and maintain, and the toolmaker can also conveniently disassemble and assemble it. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating any creative labor.

[0024] Fig. 1 The structure diagram of the anti-backward movement structure installed on the ejector plate die in the present application;

[0025] Fig. 2 The exploded view of the anti-backward movement structure in the present application;

[0026] Fig. 3 The front view of the anti-backward movement structure in the present application in the closed die state;

[0027] Fig. 4The back view of the anti-back-off structure in the application in the closed mold state;

[0028] Fig. 5 The sectional view of the anti-back-off structure in the application in the closed mold state.

[0029] Marked in the figure: 1-anti-back-off structure, 11-pressing block fixing block, 12-pressing block, 13-spring, 14-resetting block, 15-stop block, 16-stop block, 17-fixing screw, 18-inclined surface;

[0030] 2-spring plate mold, 21-bottom plate, 22-rear mold frame, 23-front mold frame, 24-slideway, 25-oil cylinder, 26-needle plate, 27-dog machine, 28-connecting rod, 29-protrusion, 141-slot, 211-first groove, 221-second groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments of the application. The description of the at least one exemplary embodiment is actually only illustrative in nature and by no means should be taken as any limitation on the application and its application or use. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0032] In the description of the application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects, and do not necessarily be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein.

[0033] Example 1

[0034] As Figs. 1-5As shown, the embodiment 1 provides a structure for preventing the back frame 22 of the ejector plate die 2 from retracting after the die is opened, so as to prevent the back frame 22 from retracting to hit the bottom plate 21, thereby causing the die to be unstable and affecting the die parting (i.e. affecting the product forming);

[0035] The ejector plate die 2 comprises the following:

[0036] The bottom plate 21 is provided with a sliding rail 24 extending towards the back frame 22, and is also provided with a first recess 211;

[0037] The back frame 22 is in sliding connection with the sliding rail 24, so as to realize the closing or opening state between the back frame 22 and the bottom plate 21; the back frame 22 is also provided with an oil cylinder 25 obliquely, and the output end of the oil cylinder 25 is connected with a ejector plate 26; the back frame 22 is also provided with a second recess 221 for accommodating the ejector plate 26; the ejector plate 26 extends into the bottom plate 21 and is located in the first recess 211;

[0038] The front frame 23 is provided with a catch 27; one end of the catch 27 is hinged to the front frame 23, and the other end extends above the back frame 22 and forms a decoupling connection with the back frame 22; the catch 27 is in sliding connection with the sliding rail 24; after the catch 27 is coupled with the back frame 22, the front frame 21 and the back frame 22 form a closed state, and after decoupling, the front frame 21 and the back frame 22 are in an open state;

[0039] Specifically, the decoupling of the catch 27 and the back frame 22 is realized through a decoupling structure, which comprises a connecting rod 28 arranged on the catch 27 and a protrusion 29 arranged in the sliding rail 24; in the closed state, the connecting rod 28 is in sliding lap with the sliding rail 24; the protrusion 29 lifts the catch 27 through the connecting rod 28 to realize decoupling;

[0040] The anti-retraction structure 1 comprises a pressing block fixing block 11, a pressing block 12, a spring 13, a reset block 14, a stop block 15, a blocking block 16, a fixing screw 17 and an inclined surface 18;

[0041] The pressing block fixing block 11 is fixedly arranged on the back frame 22 through the fixing screw 17; the pressing block 12 is arranged in the pressing block fixing block 11 in a compressible manner through the spring 13 (in the compressed state: the pressing block 12 is compressed and retracted into the inside of the pressing block fixing block 11; in the non-compressed state: the pressing block 12 partially protrudes from the surface of the pressing block fixing block 11 under the elastic force of the spring 13);

[0042] One end of the reset block 14 is fixedly connected to the front mold frame 23 by a fixing screw 17, and the other end extends above the pressing block 12 for compressing the pressing block 12 (specifically, a slope 18 can be arranged on the pressing block 12 and the reset block 14 respectively, and the compression function of the reset block 14 on the pressing block 12 is realized through the guiding action of the slope 18 after the two are contacted); the extended end of the reset block 14 is also provided with a slot 141;

[0043] One end of the stop block 15 is fixedly connected to the bottom plate 21 by a fixing screw 17, and the other end extends above the pressing block 12 and can be inserted into the slot 141 in the clamped state;

[0044] The stop block 15 is fixedly arranged above the pressing block fixing block 11 by a fixing screw 17, and one end of the reset block 14 can extend between the stop block 16 and the pressing block fixing block 11 in the clamped state.

[0045] Specifically, the anti-backoff structure 1 of the above embodiment 1 is designed on the periphery of the spring plate mold 2, which is convenient to replace when the structure is problematic, and is also more convenient for fitter to disassemble when arranged peripherally. The present application solves the situation that the rear mold frame has backoff when the oil cylinder is used to eject the mold obliquely, thereby ensuring the stability in the molding process of the mold and avoiding affecting the product molding.

[0046] Mold opening and clamping process:

[0047] When the spring plate mold 2 is opened, the rear mold frame 22 and the ejector plate 26 will move together with the front mold frame 23 for a distance and then be separated due to the action of the buckle machine 27 on the front mold frame 23, and the mold opening action is completed (specifically, when the rear mold frame 22 and the front mold frame 23 move together for a distance, the connecting rod 28 arranged on the buckle machine 27 will slide to the position of the protrusion 29, at this time the front mold frame 23 continues to drive the buckle machine 27 to move, and then the connecting rod 28 is lifted by the protrusion 29, so that the buckle machine 27 is decoupled from the rear mold frame 22, the rear mold frame 22 is no longer moved due to the limitation of the slide rail 24, and the front mold frame 23 which is decoupled from the rear mold frame 22 continues to move and is separated from the rear mold frame 22, thereby realizing the opening of the mold; at the same time, after the rear mold frame 22 moves together with the front mold frame 23 for a distance, the rear mold frame 22 is separated from the bottom plate 21, and since the rear mold frame 22 has moved relative to the bottom plate 21, the stop block 15 on the bottom plate 21 is no longer above the pressing block 12, that is, the stop block 15 is separated from the pressing block 12); after the front mold frame 23 and the rear mold frame 22 are separated, the reset block 14 will continue to move with the front mold frame 23 since it is fixed on the front mold frame 23, and due to the movement of the reset block 14, the pressing block 12 which is pressed by the reset block 14 is re-extended out of the surface of the pressing block fixing block 11 under the action of the spring force of the spring 13;

[0048] After the ejector plate mold 2 completes the above mold opening action, the oil cylinder rod on the oil cylinder 25 needs to be reset to drive the ejector plate 26 to complete the ejection action of the molded product. At this time, the mold frame 22 will have a back-off (back-off) situation after the oil cylinder 25 is forced. However, because the pressing block 12 has a length extending out of the surface of the pressing block fixing block 11, it is just blocked by the stop block 15 on the bottom plate 21, so that the rear mold frame 22 cannot move, achieving the effect of preventing the rear mold frame 22 from back-off. After the ejector plate 26 ejects the molded product, the mechanical hand takes the product. After taking the product, the ejector plate 26 is pushed back to the state of not being ejected by the oil cylinder 25, and the entire ejection process is completed.

[0049] After the ejector plate 26 returns to position, the front mold frame 23 starts to move to the position of the rear mold frame 22. At this time, the reset block 14 on the front mold frame 23 will move with the front mold frame 23 to compress the pressing block 12 extending out of the surface of the pressing block fixing block 11 back to the inside of the pressing block fixing block 11. Without the blocking of the pressing block 12, the stop block 15 on the bottom plate 21 also loses the effect of preventing the rear mold frame 22 from back-off, and finally will be compressed back to the mold closing state with the movement of the front mold frame 23. The opening and closing movement process of the entire mold is also completed.

[0050] The structure designed in embodiment 1 of the present application effectively solves the back-off problem of the rear mold frame 22, makes the mold 2 more stable, and the structure needs to calculate the back-off stroke to avoid the risk of mold closing failure. At the same time, the size of each part in the anti-back-off structure 1 needs to be designed well, and the part material needs to be selected well to prevent the part from breaking during the mold ejection process. In addition, the positioning of each part in the anti-back-off structure 1 needs to be designed well to prevent the structure from not preventing the rear mold frame 22 from back-off.

[0051] The above is the preferred embodiment of the present application, which is used to explain the present application, and is not used to limit the present application. Any obvious changes or variations derived from the technical solutions of the present application are still within the protection scope of the present application.

Claims

1. A structure for preventing the back-off of a die frame pushed out by a die plate inclined oil cylinder, characterized in that, The structure (1) is arranged on the ejector plate mold (2) to prevent the rear mold frame (22) in the ejector plate mold (2) from impacting the bottom plate (21) after the mold is opened; The ejector plate mold (2) comprises the following: The bottom plate (21) is provided with a sliding rail (24) extending towards the rear mold frame (22); The rear mold frame (22) is in sliding connection with the sliding rail (24) to realize the closed or opened state with the bottom plate (21); the rear mold frame (22) is further provided with an oil cylinder (25) obliquely, and the output end of the oil cylinder (25) is connected with a ejector rod (26) extending into the bottom plate (21); And the front mold frame (23) is provided with a buckle machine (27); One end of the buckle machine (27) is connected to the front mold frame (23), and the other end extends above the rear mold frame (22) and forms a buckle connection with the rear mold frame (22); after the buckle machine (27) is buckled with the rear mold frame (22), the front mold frame (23) and the rear mold frame (22) form a closed state, and after being unbuckled, they form an opened state; The structure (1) comprises a pressing block fixing block (11), a pressing block (12), a spring (13), a reset block (14) and a stop block (15); The pressing block fixing block (11) is arranged on the rear mold frame (22), and the pressing block (12) is arranged in the pressing block fixing block (11) and is compressible through the spring (13); One end of the reset block (14) is connected to the front mold frame (23), and the other end extends above the pressing block (12) to compress the pressing block (12); the extending end of the reset block (14) is further provided with a slot (141); One end of the stop block (15) is connected to the bottom plate (21), and the other end extends above the pressing block (12) and is inserted into the slot (141); The ejector plate mold (2) further comprises an unbuckling structure for unbuckling the buckle machine (27) from the rear mold frame (22); The unbuckling structure comprises a connecting rod (28) and a protrusion (29), the connecting rod (28) is arranged on the buckle machine (27), and the protrusion (29) is arranged in the sliding rail (24); The connecting rod (28) is slidingly connected to the sliding rail (24), and the protrusion (29) is lifted by the connecting rod (28) to realize unbuckling; The structure (1) further comprises a stop block (16); the stop block (16) is arranged above the pressing block fixing block (11), and one end of the reset block (14) extends between the stop block (16) and the pressing block fixing block (11).

2. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 1, characterized in that, The bottom plate (21) is provided with a first groove (211) for accommodating the ejector rod (26).

3. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 1, characterized in that, The rear mold frame (22) is provided with a second groove (221) for accommodating the ejector rod (26).

4. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 1, characterized in that, The buckle machine (27) is hinged to the front mold frame (23).

5. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 1, characterized in that, The pressing block fixing block (11), the reset block (14), the stop block (15) and the stop block (16) are fixedly connected through fixing screws (17) respectively.

6. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 1, characterized in that, The pressing block (12) and / or the reset block (14) are provided with inclined surfaces (18) for realizing the compression of the reset block (14) to the pressing block (12).

7. The structure for preventing the ejection of the die frame backward by the oblique oil cylinder of the stripper plate die according to claim 6, characterized in that, The pressing block (12) and the reset block (14) are respectively provided with mutually matched inclined surfaces (18).

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