Horizontal injection mold with worm in metal pipe

Abstract

A horizontal injection mold with a metal pipe inner worm comprises a front mold body, a rear mold body, a rear mold base, an injection molding mechanism, a thread core withdrawing mechanism and a pipe feeding mechanism, the front mold body, the rear mold body and the rear mold base are sequentially connected through guide columns, and the pipe feeding mechanism comprises a fixing frame, a pipe feeding jig, a pipe feeding air cylinder and a connecting rod connecting piece; the upper pipe cylinder is fixed below the rear die body on the rear die holder, the telescopic end of the upper pipe cylinder is connected with the end part of the fixed frame through a connecting rod connecting piece, a mandrel pipe is fixed at the bottom of the upper pipe jig, a product metal pipe is sleeved on the mandrel pipe, and the thread core withdrawing mechanism is fixed on one side surface, adjacent to the upper pipe mechanism, of the rear die body. According to the utility model, the positioning spring is arranged in the positioning box, so that the thread core has an axial force towards the metal tube of the product, the tube feeding cylinder enables the sliding block to tightly prop against the tube feeding jig, and the mandrel tube on the tube feeding jig has an axial force towards the thread core, so that the injection molding points of the product in the same mold are positioned at the same position; and thus, the uniformity of products in different cavities in the same mold is ensured.

Description

Technical Field

[0001] The utility model relates to the field of injection molding of new energy vehicle parts, in particular to a horizontal injection mold with an internal worm on a metal tube. Background Art

[0002] Injection molding is applicable to the fields of mass production and forming processing of products with complex shapes. For in-mold inserts, clamping and fixing are usually required to ensure the stability of the inserts during the injection process. At present, for injection products with an internal worm on a metal tube, due to the tolerance of the metal tube length, different starting positions of injection are caused when placed in the mold, resulting in poor uniformity of products in the same mold and different cavities. If single-cavity production is carried out, the production efficiency is low. Summary of the Invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a horizontal injection mold with an internal worm on a metal tube.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A horizontal injection mold with an internal worm on a metal tube, comprising a front mold body, a rear mold body, a rear mold base, an injection mechanism, a screw thread core withdrawal mechanism and an upper tube mechanism. The front mold body, the rear mold body and the rear mold base are sequentially connected through guide columns. The upper tube mechanism includes a fixing frame, an upper tube fixture, an upper tube cylinder and a connecting rod connector. The fixing frame is fixed on the rear mold body. The upper tube cylinder is fixed below the rear mold body on the rear mold base. The telescopic end of the upper tube cylinder is connected to the end of the fixing frame through the connecting rod connector. The upper tube fixture is clamped on the fixing frame. A core shaft tube is fixed at the bottom of the upper tube fixture. A product metal tube is sleeved on the core shaft tube. The pouring gate of the injection mechanism is opposite to the end of the product metal tube to be injected. The screw thread core withdrawal mechanism is fixed on one side of the rear mold body adjacent to the upper tube mechanism. The screw thread core withdrawal mechanism includes a withdrawal cylinder, a rack and a gear. The rack is slidably arranged on the rear mold body. The telescopic end of the withdrawal cylinder is connected to the rack. A plurality of gears are arranged above the rack. A gear box is buckled outside each two gears. A positioning box is arranged on one side of the gear box on the rear mold body. A spring sleeve is arranged in the positioning box. The spring sleeve is fixed on the rear mold body through a bolt. The spring sleeve is coaxially aligned with the gear. A screw thread core is sleeved at the center of the spring sleeve and the gear. An external thread is arranged at the end of the screw thread core. A positioning spring is sleeved on the screw thread core in the spring sleeve. One end of the screw thread core close to the spring sleeve is connected to an end block. The end block is connected to one end of the positioning spring. The other end of the positioning spring abuts against the gear box. The screw thread core is coaxially corresponding to the opposite product metal tube. A ejection mechanism is arranged in the rear mold base.

[0006] The described fixing frame includes a fixing truss, guide rods, sliders, and clamping plates. The end of the fixing truss is connected to a connecting rod clamping block. Sliders are arranged above the end of the fixing truss and the connecting rod clamping block. A connecting rod clamping groove is formed on the connecting rod clamping block. Rotating shafts are arranged on both side walls of the connecting rod clamping groove. The rotating shafts are rotatably connected to the connecting rod connecting member. One end of the end block is connected to one end of the positioning spring, and the other end of the positioning spring is connected to the spring sleeve. A connecting shaft is arranged on the slider. One end of the connecting rod connecting member is rotatably connected to the connecting shaft, and the other end of the connecting rod connecting member is connected to the telescopic end of the upper tube cylinder. One side of the slider abuts against the side of the upper tube fixture.

[0007] A head sealing sleeve is sleeved on the screw core near the external thread.

[0008] An adjustable pressing hammer is connected to the side wall of the described fixing frame. The adjustable pressing hammer includes a bottom connecting plate, a pressing rod, a handle, and a pressing hammer. The bottom connecting plate is connected to the fixing frame. The pressing rod is rotatably connected to the bottom connecting plate. The pressing hammer is movably connected to the pressing rod through a bolt. The handle is fixed on the bottom connecting plate.

[0009] A positioning protrusion is provided at the end of the core shaft tube on the upper tube fixture. A notch groove matching the positioning protrusion is formed in the tube end of the product metal tube. The product metal tube is sleeved on the core shaft tube, and the positioning protrusion is stuck in the notch groove.

[0010] The beneficial effects of the present utility model are as follows: A positioning box is arranged in the mold of the present utility model, and a positioning spring is arranged in the positioning box. The positioning spring enables the screw core to have an axial force towards the product metal tube. An upper tube cylinder is arranged on the upper tube mechanism. The upper tube cylinder makes the slider press tightly against the upper tube fixture, so that the core shaft tube on the upper tube fixture has an axial force towards the screw core. Positioning mechanisms are arranged at both ends of the product metal tube, so that the injection points of the products in the same mold are at the same position, thereby ensuring the unity of the products in different cavities in the same mold. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic diagram showing the structure on the rear mold body after removing the front mold body of the present utility model;

[0013] Figure 3 is a longitudinal sectional view of the rear mold body and the rear mold base after the front mold body of the present utility model is opened;

[0014] In the figure: 1 - injection mechanism; 2 - thread core withdrawal mechanism; 21 - withdrawal cylinder; 22 - rack; 23 - gear; 24 - positioning box; 25 - end block; 26 - spring sleeve; 27 - thread core; 28 - positioning spring; 29 - end plugging sleeve; 3 - upper tube mechanism; 31 - upper tube fixture; 32 - upper tube cylinder; 33 - connecting rod connector; 34 - fixing frame; 341 - fixing truss; 342 - guide rod; 343 - slider; 344 - connecting rod clamping groove; 345 - clamping plate; 346 - connecting rod clamping block; 347 - rotating shaft; 35 - product metal tube; 36 - core shaft tube; 37 - adjustable pressing hammer; 371 - bottom connecting plate; 372 - pressing rod; 373 - handle; 374 - pressing hammer; 4 - front mold body; 5 - rear mold body; 6 - rear mold base; 7 - guide post.

[0015] The following will be described in detail with reference to the accompanying drawings in combination with the embodiments of the present invention. Specific embodiments

[0016] The present invention will be further described below in conjunction with the drawings and embodiments:

[0017] Such as Figures 1 - 3As shown in the figure, a horizontal injection mold with an internal worm in a metal tube includes a front mold body 4, a rear mold body 5, a rear mold base 6, an injection mechanism 1, a screw core withdrawal mechanism 2, and an upper tube mechanism 3. The front mold body 4, the rear mold body 5, and the rear mold base 6 are sequentially connected by guide posts 7. The upper tube mechanism 3 includes a fixed frame 34, an upper tube fixture 31, an upper tube cylinder 32, and a connecting rod connector 33. The fixed frame 34 is fixed on the rear mold body 5. The upper tube cylinder 32 is fixed below the rear mold body 5 on the rear mold base 6. The telescopic end of the upper tube cylinder 32 is connected to the end of the fixed frame 34 through the connecting rod connector 33. The upper tube fixture 31 is clamped on the fixed frame 34. A mandrel tube 36 is fixed at the bottom of the upper tube fixture 31. A product metal tube 35 is sleeved on the mandrel tube 36. The pouring gate of the injection mechanism 1 is directly opposite to the injection end of the product metal tube 35. The screw core withdrawal mechanism 2 is fixed on one side surface of the rear mold body 5 adjacent to the upper tube mechanism 3. The screw core withdrawal mechanism 2 includes a withdrawal cylinder 21, a rack 22, and a gear 23. The rack 22 is slidably arranged on the rear mold body 5. The telescopic end of the withdrawal cylinder 21 is connected to the rack 22. A plurality of gears 23 are arranged above the rack 22. A gear box is buckled outside each two gears 23. A positioning box 24 is arranged on one side of the gear box on the rear mold body 5. A spring sleeve 26 is arranged in the positioning box 24. The spring sleeve 26 is fixed on the rear mold body 5 by bolts. The spring sleeve 26 is coaxially aligned with the gear 23. A screw core 27 is sleeved at the axis of the spring sleeve 26 and the gear 23. An external thread is arranged at the end of the screw core 27. A positioning spring 28 is sleeved on the screw core 27 inside the spring sleeve 26. One end of the screw core 27 close to the spring sleeve 26 is connected to an end block 25. The end block 25 is connected to one end of the positioning spring 28. The other end of the positioning spring 28 abuts against the gear box. The screw core 27 is coaxially corresponding to the opposite product metal tube 35. A ejection mechanism is arranged in the rear mold base 6.

[0018] The fixed frame 34 includes a fixed truss 341, guide rods 342, sliders 343, and clamping plates 345. The end of the fixed truss 341 is connected to a connecting rod clamping block 346. Sliders 343 are arranged above the end of the fixed truss 341 and the connecting rod clamping block 346. A connecting rod clamping groove 344 is formed on the connecting rod clamping block 346. Rotating shafts 347 are arranged on both side walls of the connecting rod clamping groove 344. The rotating shafts 347 are rotatably connected to the connecting rod connector 33. One end of the end block 25 is connected to the positioning spring 28. The other end of the positioning spring 28 is connected to the spring sleeve 26. A connecting shaft is arranged on the slider 343. One end of the connecting rod connector 33 is rotatably connected to the connecting shaft. The other end of the connecting rod connector 33 is connected to the telescopic end of the upper tube cylinder 32. One side edge of the slider 343 abuts against the side surface of the upper tube fixture 31.

[0019] A head plugging sleeve 29 is sleeved on the screw core 27 near the external thread.

[0020] An adjustable pressing hammer 37 is connected to the side wall of the fixing bracket 34. The adjustable pressing hammer 37 includes a bottom connecting plate 371, a pressing rod 372, a handle 373 and a pressing hammer 374. The bottom connecting plate 371 is connected to the fixing bracket 34. The pressing rod 372 is rotatably connected to the bottom connecting plate 371. The pressing hammer 374 is movably connected to the pressing rod 372 by bolts. The handle 373 is fixed to the bottom connecting plate 371.

[0021] A positioning protrusion is provided at the end of the mandrel tube 36 on the upper tube fixture 31. A notch groove matching the positioning protrusion is formed in the tube end of the product metal tube 35. The product metal tube 35 is sleeved on the mandrel tube 36, and the positioning protrusion is stuck in the notch groove.

[0022] During application, the upper tube fixture 31 is removed from the fixing bracket 34. The product metal tube 35 to be injection-molded is sleeved on the mandrel tube 36 on the upper tube fixture 31. The notch groove of the product metal tube 35 is stuck at the positioning protrusion on the mandrel tube 36, so that the injection starting points of all the product metal tubes 35 in the same mold with different cavities are the same. The telescopic end of the upper tube cylinder 32 is rotatably connected to the connecting rod connecting piece 33. The connecting rod connecting piece 33 is rotatably connected to the rotating shaft 347 of the connecting rod clamping block 346. The connecting rod connecting piece 33 is rotatably connected to the slider 343. The slider 343 is slidably connected to the guide rod 342. The upper tube fixture 31 is placed on the fixing bracket 34. The upper tube cylinder 32 drives the slider 343 to squeeze the upper tube fixture 31, so that the upper tube fixture 31 has a tendency to move towards the screw core 27. The upper tube fixture 31 is pressed tightly by the adjustable pressing hammer 37. The upper tube fixture 31 with the product metal tube 35 installed thereon is directly sleeved on the external thread section at the end of the screw core 27 when placed on the rear mold body 5. The telescopic end of the retracting cylinder 21 is connected to the rack 22. The rack 22 is engaged with the gear 23 for transmission. The axis of the gear 23 is sleeved with the screw core 27. A positioning spring 28 is sleeved at the end of the screw core 27. One end of the screw core 27 close to the spring sleeve 26 is connected to the end block 25. The end block 25 is connected to one end of the positioning spring 28. The other end of the positioning spring 28 is connected to the gear box. The rack 22 drives the gear 23 to rotate. The gear 23 drives the screw core 27 to rotate. When the injection mechanism 1 pours the liquid material into the pouring ends of the product metal tubes 35 on each upper tube fixture 31 respectively, after the injection is completed, the retracting cylinder 21 drives the rack 22 to move. The rack 22 is engaged with the gear 23 for transmission. The rotation of the gear 23 drives the screw core 27 to rotate. The screw core 27 withdraws along the internal thread formed at the pouring end of the product metal tube 35. When the screw core 27 rotates and withdraws from the product metal tube 35, the positioning spring 28 is compressed. The upper tube fixture 31 is removed to replace the product metal tube 35. After the upper tube fixture 31 is removed, the end of the screw core 27 with external thread loses the acting force. The screw core 27 moves towards the upper tube mechanism 3 under the action of the positioning spring 28 and resets to the position where it holds the product metal tube 35 after the upper tube operation.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0024] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0025] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The above has made an exemplary description of the present utility model in conjunction with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present utility model, or directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A horizontal injection mold with a worm in a metal tube, characterized in that: The invention comprises a front mold body (4), a rear mold body (5), a rear mold base (6), an injection molding mechanism (1), a screw core withdrawal mechanism (2) and an upper tube mechanism (3); the front mold body (4), the rear mold body (5) and the rear mold base (6) are connected in sequence through a guide column (7); the upper tube mechanism (3) comprises a fixing frame (34), an upper tube fixture (31), an upper tube cylinder (32) and a connecting rod connecting member (33); the fixing frame (34) is fixed on the rear mold body (5); the upper tube cylinder (32) is fixed below the rear mold body (5) on the rear mold base (6); and the upper tube cylinder (33) is fixed to the rear mold body (5) on the rear mold base (6). The telescopic end of the upper tube fixture (32) is connected to the end of the fixing frame (34) through a connecting rod connecting piece (33), the upper tube fixture (31) is clamped on the fixing frame (34), a core shaft tube (36) is fixed at the bottom of the upper tube fixture (31), the core shaft tube (36) is sleeved with the product metal tube (35), the outlet of the injection molding mechanism (1) is directly opposite to the end of the product metal tube (35) to be injected, the screw core withdrawal mechanism (2) is fixed on a side of the rear mold body (5) adjacent to the upper tube mechanism (3), and the screw core withdrawal mechanism (2) includes a withdrawal cylinder (21), The rack (22) and the gear (23) are slidably arranged on the rear mold body (5), the telescopic end of the exit cylinder (21) is connected to the rack (22), a plurality of gears (23) are arranged above the rack (22), the outer sides of every two gears (23) are buckled with a gear box, a positioning box (24) is arranged on one side of the gear box on the rear mold body (5), a spring sleeve (26) is arranged in the positioning box (24), the spring sleeve (26) is fixed to the rear mold body (5) by bolts, the spring sleeve (26) is coaxially aligned with the gear (23), and the spring sleeve (26) is coaxially aligned with the gear (23). A screw core (27) is sleeved at the axis of the sleeve (26) and the gear (23), the end of the screw core (27) is provided with an external thread, a positioning spring (28) is sleeved on the screw core (27) in the spring sleeve (26), one end of the screw core (27) close to the spring sleeve (26) is connected to an end block (25), the end block (25) is connected to one end of the positioning spring (28), the other end of the positioning spring (28) is pressed against the gear box, the screw core (27) is coaxially corresponding to the corresponding product metal pipe (35), and an ejection mechanism is arranged in the rear die seat (6).

2. A horizontal injection mold with a worm in a metal tube according to claim 1, characterized in that: The fixed frame (34) comprises a fixed truss (341), a guide rod (342), a slider (343) and a clamping plate (345); the end of the fixed truss (341) is connected to a connecting rod locking block (346); the slider (343) is arranged above the end of the fixed truss (341) and the connecting rod locking block (346); a connecting rod locking groove (344) is provided on the connecting rod locking block (346); a rotating shaft (347) is arranged on the two side walls of the connecting rod locking groove (344); ), the rotating shaft (347) is rotatably connected to the connecting rod connecting piece (33), the guide rod (342) is fixed on the clamping plate (345), the slider (343) is slidably connected to the guide rod (342), the slider (343) is provided with a connecting shaft, one end of the connecting rod connecting piece (33) is rotatably connected to the connecting shaft, the other end of the connecting rod connecting piece (33) is connected to the telescopic end of the upper tube cylinder (32), and one side edge of the slider (343) abuts against the side surface of the upper tube fixture (31).

3. A horizontal injection mold with a worm in a metal tube according to claim 2, characterized in that: An end sealing sleeve (29) is sleeved on the thread core (27) near the external thread.

4. A horizontal injection mold with a worm in a metal tube according to claim 3, characterized in that: An adjustable pressure hammer (37) is connected to the side wall of the fixing frame (34), and the adjustable pressure hammer (37) comprises a bottom connecting plate (371), a pressure rod (372), a handle (373) and a pressure hammer (374). The bottom connecting plate (371) is connected to the fixing frame (34), the pressure rod (372) is rotatably connected to the bottom connecting plate (371), the pressure hammer (374) is movably connected to the pressure rod (372) by bolts, and the handle (373) is fixed to the bottom connecting plate (371).

5. A horizontal injection mold with a worm in a metal tube according to claim 4, characterized in that: The end of the mandrel tube (36) on the upper tube fixture (31) is provided with a positioning protrusion, and the end of the product metal tube (35) is provided with a notch groove matching the positioning protrusion. The product metal tube (35) is sleeved on the mandrel tube (36), and the positioning protrusion is stuck in the notch groove.

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