Extrusion die with ejection structure convenient to replace

Abstract

The utility model relates to the field of extrusion dies, and discloses an extrusion die with an ejection structure capable of being replaced conveniently, which comprises a bottom plate, side plates symmetrically mounted on the opposite side of the bottom plate, a die body mounted at the tops of the side plates and a cavity formed in the die body, a mounting plate is arranged between the two side plates in a sliding manner, and a hydraulic telescopic cylinder is mounted at the top of the bottom plate. The telescopic end of the hydraulic telescopic cylinder is connected with the bottom face of the mounting plate, two sliding holes are formed in the mounting plate in a penetrating mode, ejector rods are inserted into the sliding holes in a sliding mode, and an ejector die hole communicating with the cavity is formed in the lower portion of the die body. According to the utility model, the mounting plate is provided with the sliding hole and the fixing cylinder, so that the ejector rod can be conveniently mounted and dismounted, the ejector rod can be conveniently replaced when the ejector rod is damaged or seriously worn, and the ejector rod can be fixed in the fixing cylinder through the positioning mechanism arranged on the fixing cylinder; the fixing cylinder is prevented from shaking in the ejection use process, and the installation stability of the ejector rod is improved.

Description

Technical Field

[0001] The utility model relates to the field of cutting tools, in particular to an extrusion die with an ejection structure that can be easily replaced. Background Art

[0002] A mold is a tool for molding objects and is used in all walks of life. The mold in the prior art is mainly composed of an upper mold fixing plate, an upper mold plate, a lower mold plate, a lower mold fixing plate and an ejection device. When in use, the upper mold plate and the lower mold plate complete the product molding and eject the product through the top pressure structure.

[0003] The structure of the mold ejection device in the prior art is too complicated, which increases the cost of the mold to a certain extent and easily damages the product in the mold, so its applicability and practicality are limited.

[0004] For example, an existing patent (publication number: CN205326075U) discloses an ejection structure for a mold, including an ejector rod passing through a lower mold fixing plate and communicating with a lower mold cavity, a supporting mold frame being provided at the bottom of the lower mold fixing plate, and a concave hole being provided at the bottom of the lower mold fixing plate. The structure is simple and the operation is convenient, which greatly improves the ejection efficiency and is not easy to damage the finished product. The structure has good stability in use, strong applicability, and good practicality.

[0005] The ejection structure for the mold designed as above has the following disadvantages in actual use: the ejection structure of the mold includes a slender ejector rod, through which the molded product in the mold is ejected. However, the ejector rod is subjected to great pressure during the ejection process. Over time, the ejector rod is easily damaged and needs to be replaced. The existing ejector rod is usually fixed by welding or riveting, which takes a lot of time to replace with a new ejector rod and is cumbersome to operate.

[0006] To this end, we designed an extrusion die with an easily replaceable ejection structure to solve the above problems. Utility Model Content

[0007] The utility model aims to solve the shortcomings in the prior art and proposes an extrusion die with an ejection structure that can be easily replaced.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an extrusion mold with an easily replaceable ejection structure, comprising a bottom plate, a side plate symmetrically installed opposite thereto, a mold body installed on the top of the side plate, and a cavity opened on the mold body, a mounting plate is slidably arranged between the two side plates, a hydraulic telescopic cylinder is installed on the top of the bottom plate, the telescopic end of the hydraulic telescopic cylinder is connected to the bottom surface of the mounting plate, two sliding holes are penetrated through the mounting plate, a push rod is slidably inserted in the sliding hole, a top mold hole connected to the cavity is opened at the lower part of the mold body, the push rod is slidably arranged in the top mold hole, a fixing cylinder is installed on the bottom surface of the mounting plate, the bottom end of the push rod is inserted in the fixing cylinder, and a positioning mechanism for fixing the push rod is also arranged on the fixing cylinder.

[0009] As a further description of the above technical solution: the positioning mechanism includes a positioning groove, a sliding rod, a clamping plate, a threaded ring and a positioning cylinder, the positioning groove is opened inside the fixed cylinder, a plurality of sliding rods are slidably arranged on the side wall of the fixed cylinder, a clamping plate is installed at one end of the sliding rod extending into the positioning groove, the threaded ring is threadedly connected to the outer wall of the fixed cylinder, the positioning cylinder is installed on the bottom surface of the threaded ring, and the inner wall of the positioning cylinder is provided with a slope.

[0010] As a further description of the above technical solution: the clamping plate is an arc-shaped plate structure, and the material of the clamping plate is stainless steel.

[0011] As a further description of the above technical solution: a flexible pad is installed on the side of the clamping plate away from the sliding rod, and the material of the flexible pad is rubber.

[0012] As a further description of the above technical solution: an external thread is arranged on the inner wall of the threaded ring, and an internal thread matching the external thread is arranged on the outer wall of the fixing cylinder.

[0013] As a further description of the above technical solution: the threaded ring is a circular ring structure, and the outer peripheral surface of the threaded ring is integrally formed with anti-slip patterns.

[0014] As a further description of the above technical solution: a return spring is sleeved on the sliding rod, one end of the return spring is connected to the side wall of the clamping plate, and the other end of the return spring is connected to the inner wall of the positioning groove.

[0015] As a further description of the above technical solution: a guide block is arranged on the side wall of the mounting plate, and a guide groove for the guide block to slide is arranged on the inner side wall of the side plate.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the utility model, the mounting plate is pushed upward by the hydraulic telescopic cylinder, and the mounting plate drives the ejector rod to move upward along the ejector die hole as a whole, so that the product formed inside the cavity can be pushed out to achieve the ejection effect. The sliding hole and the fixing cylinder arranged on the mounting plate are convenient for installing and disassembling the ejector rod, and thus it is convenient to replace the ejector rod when it is damaged or severely worn.

[0018] 2. In the utility model, the threaded ring can be rotated to cause vertical thread displacement along the fixed tube. When the threaded ring moves vertically downward along the fixed tube, the threaded ring drives the positioning tube to move downward synchronously. The inclined surface provided on the inner wall of the positioning tube can resist the sliding rod from sliding toward the inside of the positioning groove, thereby driving the clamping plate to tightly contact the outer wall of the push rod, thereby fixing the push rod. Conversely, when the threaded ring moves vertically upward along the fixed tube, the clamping plate can be separated from the outer wall of the push rod, thereby facilitating disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of an extrusion die with an easily replaceable ejection structure proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of a front cross-sectional structure of an extrusion die with an easily replaceable ejection structure proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a mounting plate in an extrusion die with an ejection structure that can be easily replaced, as proposed by the utility model;

[0022] Figure 4 for Figure 2 A magnified view of the structure at center.

[0023] Legend:

[0024] 1. Bottom plate; 2. Side plate; 3. Mold body; 4. Cavity; 5. Top die hole; 6. Hydraulic telescopic cylinder; 7. Mounting plate; 8. Sliding hole; 9. Ejector rod; 10. Guide block; 11. Guide groove; 12. Fixed cylinder; 13. Positioning groove; 14. Sliding rod; 15. Clamp; 16. Return spring; 17. Threaded ring; 18. Positioning cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Reference Figure 1-4 The utility model provides an embodiment: an extrusion die with an ejection structure that can be easily replaced, comprising a bottom plate 1, a side plate 2 symmetrically installed on the opposite side thereof, a die body 3 installed on the top of the side plate 2 and a cavity 4 opened on the die body 3, a mounting plate 7 is slidably arranged between the two side plates 2, a hydraulic telescopic cylinder 6 is installed on the top of the bottom plate 1, the telescopic end of the hydraulic telescopic cylinder 6 is connected to the bottom surface of the mounting plate 7, two sliding holes 8 are penetrated on the mounting plate 7, a push rod 9 is slidably inserted in the sliding hole 8, a top die hole 5 communicating with the cavity 4 is opened at the lower part of the die body 3, the push rod 9 is slidably arranged in the inside of the top die hole 5, a fixing cylinder 12 is installed on the bottom surface of the mounting plate 7, the bottom end of the push rod 9 is inserted in the inside of the fixing cylinder 12, and a positioning mechanism for fixing the push rod 9 is also arranged on the fixing cylinder 12;

[0028] During specific implementation, the mounting plate 7 is pushed upward by the hydraulic telescopic cylinder 6, and the mounting plate 7 drives the ejector rod 9 to move upward along the ejector hole 5 as a whole, so that the product formed inside the cavity 4 can be pushed out to achieve the ejection effect. The sliding hole 8 and the fixed cylinder 12 provided on the mounting plate 7 are convenient for installing and disassembling the ejector rod 9, and thus it is convenient to replace the ejector rod 9 when it is damaged or severely worn. The positioning mechanism provided on the fixed cylinder 12 can fix the ejector rod 9 inside the fixed cylinder 12, so as to avoid shaking of the fixed cylinder 12 during ejection and improve the stability of the installation of the ejector rod 9.

[0029] The positioning mechanism includes a positioning groove 13, a sliding rod 14, a clamping plate 15, a threaded ring 17 and a positioning cylinder 18. The positioning groove 13 is opened inside the fixed cylinder 12. A plurality of sliding rods 14 are slidably arranged on the side wall of the fixed cylinder 12. The clamping plate 15 is installed at one end of the sliding rod 14 extending into the positioning groove 13. The threaded ring 17 is threadedly connected to the outer wall of the fixed cylinder 12. The positioning cylinder 18 is installed on the bottom surface of the threaded ring 17. The inner wall of the positioning cylinder 18 is provided with an inclined surface.

[0030] During specific implementation, by rotating the threaded ring 17, it can cause vertical thread displacement along the fixed tube 12. When the threaded ring 17 moves vertically downward along the fixed tube 12, the threaded ring 17 drives the positioning tube 18 to move downward synchronously. The inclined surface set on the inner wall of the positioning tube 18 can resist the sliding rod 14 from sliding toward the inside of the positioning groove 13, and then drive the clamping plate 15 to press against the outer wall of the push rod 9, thereby fixing the push rod 9. Conversely, when the threaded ring 17 moves vertically upward along the fixed tube 12, the clamping plate 15 can be separated from the outer wall of the push rod 9, thereby facilitating disassembly and replacement.

[0031] Reference Figure 4 In order to make the splint 15 fit with the outer wall of the push rod 9, the splint 15 is an arc-shaped plate structure, and the material of the splint 15 is stainless steel. In addition, in order to increase the friction between the splint 15 and the outer wall of the push rod 9, a flexible pad is installed on the side of the splint 15 away from the sliding rod 14, and the material of the flexible pad is rubber. In addition, in order to ensure that the threaded ring 17 can form a threaded connection with the fixed tube 12, an external thread is provided on the inner wall of the threaded ring 17, and an internal thread matching the external thread is provided on the outer wall of the fixed tube 12.

[0032] Reference Figure 4 In order to facilitate the operator to rotate the threaded ring 17, the threaded ring 17 is a circular ring structure, and the outer circumferential surface of the threaded ring 17 is integrally formed with anti-slip patterns. In addition, in order to facilitate pulling the clamping plate 15 to reset, a reset spring 16 is sleeved on the sliding rod 14, one end of the reset spring 16 is connected to the side wall of the clamping plate 15, and the other end of the reset spring 16 is connected to the inner wall of the positioning groove 13.

[0033] Reference Figure 2 and Figure 3 In order to guide the sliding of the mounting plate 7 and improve the sliding stability of the mounting plate 7, a guide block 10 is provided on the side wall of the mounting plate 7, and a guide groove 11 for the guide block 10 to slide is provided on the inner wall of the side plate 2.

[0034] Working principle: The mounting plate 7 is pushed upward by the hydraulic telescopic cylinder 6, and the mounting plate 7 drives the ejector rod 9 to move upward along the ejector hole 5 as a whole, so that the product formed in the cavity 4 can be pushed out to achieve the ejection effect. The sliding hole 8 and the fixed cylinder 12 arranged on the mounting plate 7 are convenient for installing and disassembling the ejector rod 9, so that it is convenient to replace the ejector rod 9 when it is damaged or seriously worn. The positioning mechanism arranged on the fixed cylinder 12 can fix the ejector rod 9 inside the fixed cylinder 12 to avoid shaking of the fixed cylinder 12 during the ejection process, thereby improving the ejector rod. 9 installation stability, by rotating the threaded ring 17, it can be vertically threaded along the fixed tube 12 displacement, when the threaded ring 17 moves vertically downward along the fixed tube 12, the threaded ring 17 drives the positioning tube 18 to move downward synchronously, the inclined surface set on the inner wall of the positioning tube 18 can contact the sliding rod 14 to slide inside the positioning groove 13, and then can drive the clamping plate 15 and the outer wall of the push rod 9 to press tightly, so as to achieve the effect of fixing the push rod 9, on the contrary, when the threaded ring 17 moves vertically upward along the fixed tube 12, the clamping plate 15 can be separated from the outer wall of the push rod 9, so as to achieve the effect of easy disassembly and replacement.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion die with an easily replaceable ejection structure, comprising a bottom plate (1), a side plate (2) symmetrically mounted opposite to the bottom plate, a die body (3) mounted on the top of the side plate (2), and a cavity (4) provided on the die body (3), characterized in that: A mounting plate (7) is slidably arranged between the two side plates (2); a hydraulic telescopic cylinder (6) is installed on the top of the bottom plate (1); the telescopic end of the hydraulic telescopic cylinder (6) is connected to the bottom surface of the mounting plate (7); two sliding holes (8) are provided through the mounting plate (7); a push rod (9) is slidably inserted into the inside of the sliding hole (8); a top die hole (5) connected to the cavity (4) is provided at the lower part of the mold body (3); the push rod (9) is slidably arranged inside the top die hole (5); a fixing cylinder (12) is installed on the bottom surface of the mounting plate (7); the bottom end of the push rod (9) is inserted into the inside of the fixing cylinder (12); and a positioning mechanism for fixing the push rod (9) is also provided on the fixing cylinder (12).

2. The extrusion die with a conveniently replaceable ejection structure according to claim 1, characterized in that: The positioning mechanism comprises a positioning groove (13), a sliding rod (14), a clamping plate (15), a threaded ring (17) and a positioning tube (18); the positioning groove (13) is arranged inside the fixed tube (12); a plurality of sliding rods (14) are slidably arranged on the side wall of the fixed tube (12); one end of the sliding rod (14) extending into the positioning groove (13) is provided with a clamping plate (15); the threaded ring (17) is threadedly connected to the outer wall of the fixed tube (12); the positioning tube (18) is installed on the bottom surface of the threaded ring (17); and the inner wall of the positioning tube (18) is provided with an inclined surface.

3. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: The clamping plate (15) is an arc-shaped plate structure, and the material of the clamping plate (15) is stainless steel.

4. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: A flexible pad is installed on one side of the clamping plate (15) away from the sliding rod (14), and the material of the flexible pad is rubber.

5. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: The inner wall of the threaded ring (17) is provided with an external thread, and the outer wall of the fixing cylinder (12) is provided with an internal thread matching the external thread.

6. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: The threaded ring (17) is a circular ring structure, and the outer peripheral surface of the threaded ring (17) is integrally formed with anti-slip patterns.

7. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: The sliding rod (14) is sleeved with a return spring (16), one end of the return spring (16) is connected to the side wall of the clamping plate (15), and the other end of the return spring (16) is connected to the inner wall of the positioning groove (13).

8. The extrusion die with a conveniently replaceable ejection structure according to claim 2, characterized in that: A guide block (10) is arranged on the side wall of the mounting plate (7), and a guide groove (11) for the guide block (10) to slide is arranged on the inner side wall of the side plate (2).

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