Mould group with ejection structure

Abstract

The invention discloses a die set with an ejection structure. The die set comprises a lower die base, an upper die base, a female die, a male die, a guide ejector rod, a limiting piece, a sliding plate, a horizontal groove, an inclined groove, an insertion column, a sleeve, a connecting piece, a pull rope, a movable piece, a movable column and a matching plate. The sliding plate horizontally slides along the lower die base firstly, the inserting column slides towards the left side along the horizontal groove located in the bottom, the height of the inserting column and the height of the guiding ejector rod are not changed, the movable column makes contact with the matching plate, the upper die base slightly moves relative to the lower die base, and therefore connection between the male die and the female die is loosened; the sliding plate continues to move towards the right side, the inserting column slides into the inclined groove located in the left side, the guide ejector rod moves upwards relative to the fixing plate, and therefore the sleeve is ejected upwards and matched with stretching and retracting of the air cylinder to drive the upper die base to be ejected out and away from the lower die base, the male die is made to be away from the female die, and a formed part can be taken out conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of stamping die structures, in particular to a die set with an ejection structure. Background Art

[0002] Stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate it, thereby obtaining the required parts.

[0003] The existing stamping dies usually use elastic parts in conjunction with guide columns to reset the lower die. However, during the long-term compression and reset process, the elasticity of the elastic parts weakens over time, affecting the fit between the punch and the die, thereby affecting the quality of the product and normal stamping.

[0004] To this end, we propose a mold set with an ejection structure. Summary of the invention

[0005] The object of the present invention is to provide a mold set with an ejection structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a mold set with an ejection structure, comprising a lower mold base and an upper mold base located on a support plate, wherein a concave mold is provided at the bottom of the lower mold base, and a convex mold matching with the concave mold is provided on the upper mold base; It also includes: an ejection structure, the ejection structure includes a guide ejector rod and a limiter, the two sides of the lower die seat are slidably matched with slide plates through the limiters, the slide plates are provided with two horizontal grooves and an inclined groove connected end to end, the bottom of the guide ejector rod is provided with a plug-in column, the plug-in column is slidably matched with the horizontal groove and the inclined groove, and the side of the upper die seat is fixedly connected with a sleeve that is movably sleeved with the guide ejector rod; A connecting piece, wherein a pull rope is provided inside the guide ejector rod, and the pull rope passes through the connecting piece to move the sleeve along the guide ejector rod, thereby ejecting the upper die seat from the lower die seat; A movable part and a movable column connected and fixed on the slide plate, the upper mold base is rotatably connected with a matching plate through the movable part, before the guide ejector rod is ejected through the movable part, the movable column acts on the matching plate, thereby slightly moving the upper mold base, making it easier for the guide ejector rod to eject the upper mold base.

[0007] The depth of the bottom end of the inclined groove at the right position is less than the depth of the right end of the horizontal groove at the lower position, and the depth of the top end of the inclined groove at the left position is less than the depth of the left end of the horizontal groove at the upper position.

[0008] Preferably, a sleeve tube movably sleeved with the plug-in column is fixedly connected to the bottom of the guide push rod, and an elastic compression piece is hung between the sleeve tube and the plug-in column.

[0009] Preferably, the limiting member includes a sliding wedge plate and a power member connected and fixed to the slide plate, limiting grooves slidably matched with the sliding wedge plate are opened on both sides of the lower mold base, and a fixing plate plug-matched with the guide push rod is fixedly connected to the lower mold base, and the power member is used to drive the slide plate to slide horizontally.

[0010] Preferably, the lower die base is fixedly connected with guide pins plugged into the upper die base on all sides, and the upper die base is provided with an embedding groove plugged into the fixed plate at the bottom, and the fixed plate and the embedding groove are T-shaped structures.

[0011] Preferably, the power component includes a telescopic cylinder fixedly connected to the bracket plate, a first connecting rod is fixedly connected to the end of the slide plate, a second connecting rod is fixedly connected between the telescopic ends of the two telescopic cylinders, and the first connecting rod and the second connecting rod are connected and fixed.

[0012] Preferably, the connecting member includes a rotation shaft that slides with the pull rope and is rotatably connected to the guide top rod. A movable groove is penetrated through the guide top rod. The pull rope and the rotation shaft are located in the movable groove. One end of the pull rope is rotatably connected to the fixed plate, and the other end of the pull rope is fixedly connected to a sleeve for rotation connection.

[0013] Preferably, the movable part includes a rotating rod fixedly connected to the matching plate, the rotating rod is rotatably connected to the upper mold base, a rotating groove is provided on the side of the upper mold base, and a rotating block rotatably connected to the rotating groove is fixedly connected to the rotating rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The slide plate first slides horizontally along the lower die base, and the plug-in column slides to the left along the horizontal groove at the bottom. The height of the plug-in column and the guide push rod does not change. The movable column contacts the matching plate, causing the upper die base to move slightly relative to the lower die base, thereby loosening the connection between the punch and the die. The slide plate continues to move toward the right direction, the plug-in column slides into the inclined groove on the left side, and the guide push rod moves upward relative to the fixed plate, so that the sleeve is pushed upward, and the upper die seat is pushed out and away from the lower die seat in coordination with the extension and contraction of the cylinder, so that the punch is away from the die, which is convenient for taking out the molded part; The sleeve is moved relative to the guide ejector rod by pulling the pull rope, thereby ensuring the ejection distance of the punch and the space between the die and the punch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the split structure of the cylinder and the upper die base of the present invention; Figure 3 It is a schematic diagram of the matching structure of the upper die base and the lower die base of the present invention; Figure 4 It is a schematic diagram of the split structure of the telescopic cylinder and the first connecting rod of the present invention; Figure 5 It is a schematic diagram of the matching structure of the fixing plate and the embedding groove, the male mold and the female mold of the present invention; Figure 6 It is a schematic diagram of the split structure of the male mold and the female mold of the present invention; Figure 7 It is a schematic diagram of the split structure of the sliding wedge plate and the limiting groove of the present invention; Figure 8 It is a schematic diagram of the matching structure of the slide plate and the guide push rod of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the sleeve and the sleeve sleeve of the present invention; Fig.10 It is a schematic diagram of the disassembly structure of the guide push rod, the sleeve tube and the fixing plate of the present invention; Fig.11 It is a schematic diagram of the sliding matching structure between the plug-in column and the horizontal groove and the inclined groove of the present invention; Fig.12 It is a schematic diagram of the cross-sectional structure of the inclined groove located on the right side of the present invention; Fig.13 It is a schematic diagram of the plug-in structure of the guide push rod, the fixing plate and the sleeve of the present invention; Fig.14 This is a schematic diagram of the structure of the present invention without the guide push rod; Fig.15 For the present invention Fig.14 Schematic diagram of the structure splitting; Fig.16 For the present invention Figure 2 Schematic diagram of the cross-section of the moving parts structure.

[0016] In the figure: 1. lower die base; 2. upper die base; 3. die; 4. punch; 5. guide push rod; 6. slide plate; 7. horizontal groove; 8. inclined groove; 9. plug-in column; 10. sleeve; 11. pull rope; 12. movable column; 13. matching plate; 14. sleeve tube; 15. elastic compression member; 16. sliding wedge plate; 17. limit groove; 18. fixed plate; 19. guide plug-in column; 20. embedded groove; 21. telescopic cylinder; 22. first connecting rod; 23. rotation shaft; 24. movable groove; 25. rotation rod; 26. rotation groove; 27. rotation block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 16 The present invention provides a mold set with an ejection structure, comprising a lower mold base 1 and an upper mold base 2 located on a support plate, wherein the lower mold base 1 is connected and fixed to the support plate, a cylinder is fixedly connected to the support plate, a telescopic end of the cylinder is connected and fixed to the upper mold base 2, a concave mold 3 is provided at the bottom of the lower mold base 1, and a convex mold 4 cooperating with the concave mold 3 is provided on the upper mold base 2; That is, the lower die base 1 remains fixed, while the upper die base 2 can only move up and down; It also includes: an ejection structure, which includes a guide ejector rod 5 and a stopper, a slide plate 6 is slidably matched with the two sides of the lower die base 1 through the stopper, and the slide plate 6 is provided with two horizontal grooves 7 and an inclined groove 8 connected end to end, and a plug-in column 9 is provided at the bottom of the guide ejector rod 5, and the plug-in column 9 is slidably matched with the horizontal groove 7 and the inclined groove 8, and a sleeve 10 that is movably sleeved with the guide ejector rod 5 is fixedly connected to the side of the upper die base 2; A connecting piece, a pull rope 11 is provided inside the guide push rod 5, and the pull rope 11 passes through the connecting piece to move the sleeve 10 along the guide push rod 5, so that the upper die base 2 is ejected from the lower die base 1; The movable part and the movable column 12 connected and fixed on the slide plate 6, the upper die seat 2 is rotatably connected with a matching plate 13 through the movable part, and before the guide ejector 5 is ejected through the movable part, the movable column 12 acts on the matching plate 13, thereby slightly moving the upper die seat 2, so that the guide ejector 5 can be ejected from the upper die seat 2; In the present application, the lower die base 1 is driven downward by the cylinder, so that the punch 4 moves downward and cooperates with the die 3 to complete the molding process of the extruded object. At this time, the plug-in column 9 is located at the right end of the horizontal groove 7 at the bottom. After the molding is completed, the ejection process is performed; The ejection processing method of the mold set of this application is as follows: S1. Through the power part, the slide plate 6 slides horizontally along the lower die base 1, and the slide plate 6 moves toward the right direction. At this time, the plug-in column 9 slides toward the left direction along the horizontal groove 7 at the bottom. The height of the plug-in column 9 and the guide push rod 5 does not change. In this process, the movable column 12 moves with the slide plate 6 and contacts the matching plate 13. Under the action of the movable part, the matching plate 13 remains in a vertical state. The movable column 12 passes through the matching plate 13 and reacts to the matching plate 13, so that the upper die base 2 moves slightly relative to the lower die base 1, thereby loosening the connection between the punch 4 and the die 3. S2, the slide plate 6 continues to move toward the right direction, the plug-in column 9 slides into the inclined groove 8 on the left side, and the guide push rod 5 moves upward relative to the fixed plate 18, so that the sleeve 10 is pushed upward, and the upper die base 2 is pushed out and away from the lower die base 1 in coordination with the extension and contraction of the cylinder, so that the punch 4 is away from the die 3, which is convenient for taking out the molded part; The sleeve 10 is moved relative to the guide push rod 5 by pulling the pull rope 11, thereby ensuring the ejection distance of the punch 4 and the space between the die 3 and the punch 4; S3, placing a new extruded object between the die 3 and the punch 4; S4, the slide plate 6 is moved to the left by the power part, and the plug-in column 9 slides to the right along the horizontal groove 7 at the top. At this time, the height of the plug-in column 9 and the guide push rod 5 does not change, and when the movable column 12 passes through the matching plate 13, the upper die base 2 and the lower die base 1 will not be tilted under the action of the movable part; S5. Make the slide plate 6 continue to move along the left direction, the plug-in column 9 slides along the inclined groove 8 on the right side, and the guide push rod 5 moves downward relative to the fixed plate 18, so that the sleeve 10 moves downward, and cooperates with the extension of the cylinder to drive the upper die base 2 close to the lower die base 1, so that the downward-moving punch 4 acts on the extruded object to enter the die 3, completing the molding of the extruded object.

[0019] It is worth noting that the depth of the bottom end of the inclined groove 8 at the right position is less than the depth of the right end of the horizontal groove 7 at the lower position, and the depth of the top end of the inclined groove 8 at the left position is less than the depth of the left end of the horizontal groove 7 at the upper position. Through this setting, it is ensured that the plug-in column 9 rotates in the same clockwise direction along the two horizontal grooves 7 and the inclined groove 8, that is, the plug-in column 9 rotates clockwise relative to the slide plate 6; A sleeve tube 14 movably connected to the plug-in column 9 is fixedly connected to the bottom of the guide push rod 5, and an elastic compression member 15 is hung between the sleeve tube 14 and the plug-in column 9. Through the action of the elastic compression member 15, the plug-in column 9 always slides in the horizontal groove 7 and the inclined groove 8 and will not separate from the horizontal groove 7 and the inclined groove 8, thereby ensuring that the plug-in column 9 always rotates in the same clockwise direction along the horizontal groove 7 and the inclined groove 8.

[0020] The limiting member includes a sliding wedge plate 16 connected and fixed to the slide plate 6 and a power member. Limiting grooves 17 slidably matched with the sliding wedge plate 16 are provided on both sides of the lower mold base 1. A fixing plate 18 is fixedly connected to the lower mold base 1 and plugged into the guide push rod 5. Through the action of the fixing plate 18, the horizontal movement of the guide push rod 5 is limited so that the guide push rod 5 can only move in the vertical direction. The cross-section of the guide push rod 5 is a non-circular shape to ensure that the guide push rod 5 does not rotate. The power member is used to drive the slide plate 6 to slide horizontally. Through the power member, the slide plate 6 slides horizontally along the lower mold base 1, and the sliding wedge plate 16 slides horizontally along the limiting groove 17.

[0021] The lower die base 1 is fixedly connected with guide pins 19 that are plugged into the upper die base 2 on all sides. The guide pins 19 further ensure that the upper die base 2 can stably move up and down along the lower die base 1, so as to facilitate opening the mold or mutual extrusion molding. The bottom of the upper die base 2 is provided with an embedding groove 20 that is plugged into the fixed plate 18. The fixed plate 18 and the embedding groove 20 are T-shaped structures. Further, through the plug-in cooperation of the embedding groove 20 and the fixed plate 18, it is ensured that during the extrusion molding process, the punch 4 is accurately and smoothly fitted into the die 3 to complete the extrusion molding.

[0022] The power part includes a telescopic cylinder 21 connected and fixed to the bracket plate, a first connecting rod 22 is fixedly connected to the end of the slide plate 6, a second connecting rod is fixedly connected between the telescopic ends of the two telescopic cylinders 21, the first connecting rod 22 and the second connecting rod are connected and fixed, and the telescopic cylinder 21 is extended and retracted to drive the second connecting rod to move, thereby moving the first connecting rod 22, causing the slide plate 6 to move along the lower mold base 1, and the sliding wedge plate 16 to slide along the limiting groove 17.

[0023] The connecting member includes a rotation shaft 23 that is slidably matched with the pull rope 11 and is rotatably connected to the guide push rod 5. A movable groove 24 is penetrated on the guide push rod 5. The pull rope 11 and the rotation shaft 23 are located in the movable groove 24. One end of the pull rope 11 is rotatably connected to the fixed plate 18, and the other end of the pull rope 11 is fixedly connected to the sleeve 10 for rotational connection; In the present application, when the slide plate 6 slides and the plug-in column 9 slides in the inclined groove 8 at the left position, the guide ejector rod 5 moves upward along the fixed plate 18, so that the sleeve 10 moves upward, driving the upper die base 2 to move upward, thereby moving away from the lower die base 1, and completing the ejection of the punch 4; It is worth noting that: while the guide push rod 5 moves upward, the length of the pull rope 11 is fixed, and one end of the pull rope 11 is connected and fixed to the fixed plate 18, so that the position height of one end of the pull rope 11 remains unchanged, and the guide push rod 5 moves upward relative to the fixed plate 18, so that the rotation axis 23 moves upward, and the pull rope 11 slides along the rotation axis 23, so that the other end of the pull rope 11 moves upward along the guide push rod 5 (the other end of the pull rope 11 moves upward relative to the guide push rod 5), so that the sleeve 10 moves upward relative to the guide push rod 5, further ensuring the moving distance of the upper die base 2 and the distance between the upper die base 2 and the lower die base 1, so that the punch 4 is completely separated from the die 3, so that the extruded part is taken out, and the extruded material is subsequently placed between the punch 4 and the die 3 for the next forming operation; The pull rope 11 in the present application is a non-elastic pull rope 11, which is a high-strength wear-resistant rope, such as a steel wire rope or a nylon rope.

[0024] The movable part includes a rotation rod 25 connected and fixed to the matching plate 13 , the rotation rod 25 is rotatably connected to the upper die base 2 , a rotation groove 26 is provided on the side of the upper die base 2 , and a rotation block 27 rotatably connected to the rotation groove 26 is fixedly connected to the rotation rod 25 .

[0025] In the present application, when the slide plate 6 moves toward the telescopic cylinder 21 (after the die is extruded), the plug-in column 9 moves along the horizontal groove 7 at the bottom position, and the slide plate 6 drives the movable column 12 to move along the lower die base 1. The movable column 12 moving to the right contacts the matching plate 13. Due to the limitation of the rotation groove 26, the matching plate 13 maintains vertical rotation and cannot rotate counterclockwise. The movable column 12 passes through the bottom of the vertical matching plate 13, thereby slightly moving the matching plate 13 upward, thereby connecting the movable punch 4 and the die 3, which is convenient for the subsequent upward movement of the guide push rod 5, so that the upper die base 2 is separated from the lower die base 1; The center of gravity of the mating plate 13 is close to the left side, so that the rotating block 27 can be kept in contact with the vertical surface of the rotating groove 26 in a relaxed state; It is worth noting that: during this process, the plug-in column 9 is always located in the horizontal groove 7 at the bottom position; When the slide plate 6 moves away from the telescopic cylinder 21, the plug-in column 9 moves along the horizontal groove 7 at the top position, and the movable column 12 moving to the left contacts the matching plate 13. Due to the cooperation of the rotating groove 26, the matching plate 13 rotates at a certain angle, that is, clockwise, thereby avoiding the action on the movable column 12, so that the movable column 12 passes through the matching plate 13, and the matching plate 13 does not move upward, and the upper mold base 2 does not move upward.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mold set with an ejection structure, comprising: A lower die base (1) and an upper die base (2) are located on the support plate, wherein a concave die (3) is provided at the bottom of the lower die base (1), and a convex die (4) cooperating with the concave die (3) is provided on the upper die base (2); The invention is characterized in that it further comprises: an ejection structure, the ejection structure comprises a guide ejector rod (5) and a stopper, slide plates (6) are slidably matched with each other on both sides of the lower die base (1) through the stopper, the slide plates (6) are provided with two horizontal grooves (7) and an inclined groove (8) connected end to end, a plug-in column (9) is provided at the bottom of the guide ejector rod (5), the plug-in column (9) is slidably matched with the horizontal groove (7) and the inclined groove (8), and a sleeve (10) movably connected with the guide ejector rod (5) is fixedly connected to the side of the upper die base (2); A connecting piece, wherein a pull rope (11) is provided inside the guide push rod (5), and the pull rope (11) passes through the connecting piece to move the sleeve (10) along the guide push rod (5), thereby ejecting the upper die seat (2) from the lower die seat (1); A movable part and a movable column (12) connected and fixed on the slide plate (6); a matching plate (13) is rotatably connected to the upper die seat (2) through the movable part; before the guide ejector rod (5) is ejected through the movable part, the movable column (12) acts on the matching plate (13), thereby slightly moving the upper die seat (2), making it easier for the guide ejector rod (5) to eject the upper die seat (2).

2. The mold assembly with an ejection structure according to claim 1, characterized in that: The depth of the bottom end of the inclined groove (8) located at the right position is smaller than the depth of the right end of the horizontal groove (7) located at the lower position, and the depth of the top end of the inclined groove (8) located at the left position is smaller than the depth of the left end of the horizontal groove (7) located at the upper position.

3. The mold assembly with an ejection structure according to claim 1, characterized in that: A sleeve tube (14) movably sleeved with the plug-in column (9) is fixedly connected to the bottom of the guide push rod (5), and an elastic compression member (15) is hung between the sleeve tube (14) and the plug-in column (9).

4. The mold assembly with an ejection structure according to claim 1, characterized in that: The limiting member comprises a sliding wedge plate (16) connected and fixed to the slide plate (6) and a power member. Limiting grooves (17) slidably matched with the sliding wedge plate (16) are provided on both sides of the lower die base (1). A fixing plate (18) pluggably matched with the guide push rod (5) is fixedly connected to the lower die base (1). The power member is used to drive the slide plate (6) to slide horizontally.

5. The mold assembly with an ejection structure according to claim 4, characterized in that: The lower die base (1) is fixedly connected to guide pins (19) on all sides thereof and is plugged into the upper die base (2). The upper die base (2) is provided with an embedding groove (20) at the bottom thereof and is plugged into the fixing plate (18). The fixing plate (18) and the embedding groove (20) are T-shaped structures.

6. The mold assembly with an ejection structure according to claim 4, characterized in that: The power member comprises a telescopic cylinder (21) connected and fixed to the support plate, a first connecting rod (22) is fixedly connected to the end of the slide plate (6), a second connecting rod is fixedly connected between the telescopic ends of the two telescopic cylinders (21), and the first connecting rod (22) and the second connecting rod are connected and fixed.

7. The mold assembly with an ejection structure according to claim 4, characterized in that: The connecting member comprises a rotation shaft (23) which is slidably matched with the pull rope (11) and is rotationally connected to the guide push rod (5); a movable groove (24) is provided on the guide push rod (5); the pull rope (11) and the rotation shaft (23) are located in the movable groove (24); one end of the pull rope (11) is rotationally connected to the fixed plate (18); and the other end of the pull rope (11) is fixedly connected to the sleeve (10) for rotational connection.

8. The mold assembly with an ejection structure according to claim 1, characterized in that: The movable part comprises a self-rotating rod (25) connected and fixed to the matching plate (13); the self-rotating rod (25) is rotatably connected to the upper die base (2); a rotation groove (26) is provided on the side of the upper die base (2); and a rotation block (27) is fixedly connected to the self-rotating rod (25) and rotatably connected to the rotation groove (26).

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