Bushing type die cavity bottom structure

Abstract

The utility model discloses a bushing type mold cavity bottom structure, which relates to the technical field of mold cavity bottom structures and comprises a mold cavity bottom, an injection part, a sprue channel, a reducing transition section and a forming surface are sequentially arranged in the mold cavity bottom along the axial direction, and a cooling channel is further arranged in the mold cavity bottom. Mounting parts used for conveniently disassembling and assembling the sprue channel are fixed to the two sides of the sprue channel, mounting bases and limiting pressing plates used for assisting in clamping and limiting of the mounting parts are arranged on the outer sides of the mounting parts, and connecting rods used for assisting in position adjustment of the limiting pressing plates are connected between the mounting bases and the limiting pressing plates. According to the utility model, the mounting seat is arranged, so that an inlaying connection mode and a clamping connection mode can be combined to realize limiting mounting and convenient dismounting of the sprue channel, the problem of higher cost in the prior art can be avoided, and the problem of unstable mounting can also be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cavity bottom structure technical field, concretely is a kind of sleeve type cavity bottom structure. BACKGROUND

[0002] Due to the mold in long time production product, cavity bottom gate and valve needle long time mutual friction, lead to cavity bottom gate increase, oval, pull injury etc., to lead to the product gate that production appears burr, wire drawing, perforation etc.;In order to solve the problem of cavity bottom gate increase, oval, pull injury etc., in prior art, generally all directly replace new cavity bottom, however this cavity bottom overall replacement mode cost is too high, not in line with economic efficiency, so need improvement.

[0003] According to the Chinese utility model patent with patent No. CN214491420U, a sleeve type cavity bottom structure is disclosed, which comprises a cavity bottom body. The middle part of the cavity bottom body is provided with a cavity injection part and a cavity bottom forming surface along the axial direction in sequence. The cavity injection part is provided with a mounting groove at one end close to the cavity bottom forming surface. A sleeve is arranged in the mounting groove. The sleeve is interference-fitted in the mounting groove. The sleeve is provided with a gate channel that is in communication with the cavity injection part and the cavity bottom forming surface at both ends.

[0004] Although the above-mentioned patent solves the drawbacks of overall replacement, it replaces the cavity bottom by interference-fitting, which may cause poor stability of the cavity bottom. Therefore, we propose a sleeve type cavity bottom structure. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a sleeve type cavity bottom structure to solve the technical problems mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a sleeve type cavity bottom structure, comprising a cavity bottom. The inside of the cavity bottom is provided with an injection part, a gate channel, a variable-diameter transition section and a forming surface along the axial direction in sequence. The inside of the cavity bottom is also provided with a cooling channel. The gate channel is fixed with a mounting part on both sides for convenient disassembly and assembly of the gate channel. The outside of the mounting part is provided with a mounting seat and a limiting plate for auxiliary mounting part clamping and limiting. The mounting seat and the limiting plate are connected with a connecting rod for position adjustment of the auxiliary limiting plate.

[0007] By adopting the above-mentioned technical scheme, the interference-fitting connection mode and the clamping connection mode are combined to realize the limiting installation and convenient disassembly of the gate channel, which can avoid the high cost problem in the prior art and solve the problem of unstable installation.

[0008] The utility model further sets up, the top end of connecting rod is fixedly connected with the outer wall of spacing pressboard, and the bottom end of connecting rod is slidably connected with the outer wall of mounting seat.

[0009] Through adopting the above technical scheme, the effect of assisting the movement of the pressboard is achieved.

[0010] The utility model further sets up, the inside of mounting seat is opened with the clamping groove, and the inside diameter of clamping groove is adapted with the outside diameter of mounting portion, the inside of clamping groove is provided with driven plate, and the recess is opened in the bottom wall of mounting seat below driven plate, and reset spring is connected between the bottom end of driven plate and the inner wall of recess.

[0011] Through adopting the above technical scheme, the effect of assisting the spacing gate channel is achieved.

[0012] The utility model further sets up, the both sides outer wall of driven plate is fixedly connected with the drive rod extending to the inside of mounting seat, and drive rod is slidably connected with the inner wall of mounting seat.

[0013] Through adopting the above technical scheme, the effect of assisting the drive driven gear plate is achieved.

[0014] The utility model further sets up, the inside of mounting seat is provided with gear shaft, and the end of gear shaft is fixedly connected with the bottom end of connecting rod, one side of gear shaft is connected with the drive driven gear plate, and the outer wall of drive driven gear plate is fixedly connected with the synchronous rod for driving drive driven gear plate, and the other side end of synchronous rod extends to the outer wall of drive rod and is fixedly connected with the outer wall of drive rod.

[0015] Through adopting the above technical scheme, the driving effect of drive driven gear plate is achieved.

[0016] Summarized above, the utility model mainly has the following beneficial effects:

[0017] The utility model discloses a mounting seat and pressboard are set up, first, when installing gate channel, the mounting portion of both sides of gate channel is inserted into the clamping groove of the inside of mounting seat, then moves downward gate channel until the installation of gate channel is completed, in this process, the mounting portion extrudes driven plate and moves downward, and driven plate thus gradually moves into recess and synchronously drives drive rod to move, and drive rod moves and then drives drive driven gear plate to move through synchronous rod, and drive driven gear plate moves and then drives gear shaft to rotate, and gear shaft rotates and then drives spacing pressboard, and when the installation of gate channel is completed, spacing pressboard also moves to the top of mounting portion and realizes the compression limit of mounting portion, that is, realizes the stable and convenient installation of gate channel. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure schematic diagram of the utility model.

[0019] Figure 2 For the utility model Figure 1 A local enlarged view in the

[0020] Figure 3 For the mounting seat structure schematic view of the utility model;

[0021] Figure 4 For the mounting seat internal structure schematic view of the utility model.

[0022] In the drawing: 1, cavity bottom; 2, forming surface; 3, cooling channel; 4, injection part; 5, gate channel; 6, variable diameter transition section; 7, mounting part; 8, mounting seat; 9, limiting pressing plate; 10, connecting rod; 11, clamping groove; 12, driven plate; 13, recess; 14, drive rod; 15, return spring; 16, gear shaft; 17, drive toothed plate; 18, synchronous rod. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.

[0024] The embodiments will be described below according to the overall structure of the utility model.

[0025] A sleeve type cavity bottom structure, as shown in the figure, comprises a cavity bottom 1, the inside of the cavity bottom 1 is sequentially provided with an injection part 4, a gate channel 5, a variable diameter transition section 6 and a forming surface 2 along the axial direction, and the inside of the cavity bottom 1 is further provided with a cooling channel 3, both sides of the gate channel 5 are fixed with mounting parts 7 for conveniently disassembling and assembling the gate channel 5, the outside of the mounting parts 7 is provided with a mounting seat 8 and a limiting pressing plate 9 for assisting the mounting parts 7 to be clamped and limited, and the connecting rod 10 for assisting the limiting pressing plate 9 to adjust the position is connected between the mounting seat 8 and the limiting pressing plate 9.

[0026] Further, the top end of the connecting rod 10 is fixedly connected with the outer wall of the limiting pressing plate 9, and the bottom end of the connecting rod 10 is slidingly connected with the outer wall of the mounting seat 8.

[0027] Please refer to Figure 1 And Figure 3 The inside of the mounting seat 8 is provided with a clamping groove 11, and the inner diameter of the clamping groove 11 is matched with the outer diameter of the mounting part 7, so as to realize the function of assisting the gate channel 5 to be limited.

[0028] Please refer to Figures 2-3The inside of the engaging slot 11 is provided with a driven plate 12, and a groove 13 is formed in the bottom wall of the mounting seat 8 below the driven plate 12, a return spring 15 is connected between the bottom end of the driven plate 12 and the inner wall of the groove 13, the two side outer walls of the driven plate 12 are fixedly connected with driving rods 14 extending into the inside of the mounting seat 8, and the driving rods 14 are slidingly connected with the inner wall of the mounting seat 8, so that the driving rods 14 are driven.

[0029] Please refer to Figure 4 The inside of the mounting seat 8 is provided with a gear shaft 16, and the end of the gear shaft 16 is fixedly connected with the bottom end of the connecting rod 10, one side of the gear shaft 16 is engagedly connected with a driving tooth plate 17, the outer wall of the driving tooth plate 17 is fixedly connected with a synchronous rod 18 for driving the driving tooth plate 17, and the other end of the synchronous rod 18 extends to the outer wall of the driving rod 14 and is fixedly connected with the outer wall of the driving rod 14, so that the driving tooth plate 17 is driven

[0030] The working principle of the utility model is as follows: when installing the gate channel 5, the mounting parts 7 on both sides of the gate channel 5 are inserted into the engaging slots 11 in the inside of the mounting seats 8, and then the gate channel 5 is moved downward until the gate channel 5 is installed.

[0031] During the process, the mounting parts 7 press the driven plate 12 to move downward, the driven plate 12 is gradually moved into the groove 13 and drives the driving rod 14 to move at the same time, the driving rod 14 moves and drives the driving tooth plate 17 to move through the synchronous rod 18, the driving tooth plate 17 moves and drives the gear shaft 16 to rotate, and the gear shaft 16 rotates and drives the limiting pressing plate 9 to rotate.

[0032] When the gate channel 5 is installed, the limiting pressing plate 9 is also moved to the top end of the mounting part 7 to press and limit the mounting part 7, so that the gate channel 5 is stably and conveniently installed.

[0033] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make modifications, replacements and changes without creative contribution after reading the specification without departing from the principles and purposes of the utility model, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A nested mold cavity bottom structure, comprising a mold cavity bottom (1), characterized in that: The cavity bottom (1) is provided with an injection section (4), a gating channel (5), a diameter transition section (6), and a molding surface (2) in sequence along the axial direction. The cavity bottom (1) is also provided with a cooling channel (3). The gating channel (5) is fixed with a mounting part (7) on both sides for easy disassembly and assembly of the gating channel (5). The mounting part (7) is provided with a mounting seat (8) and a limiting pressure plate (9) on the outside of the mounting part (7) for assisting the mounting part (7) in engaging and limiting. A connecting rod (10) for adjusting the position of the limiting pressure plate (9) is connected between the mounting seat (8) and the limiting pressure plate (9).

2. The insert-type mold cavity bottom structure according to claim 1, characterized in that: The top end of the connecting rod (10) is fixedly connected to the outer wall of the limiting pressure plate (9), while the bottom end of the connecting rod (10) is slidably connected to the outer wall of the mounting base (8).

3. The insert-type mold cavity bottom structure according to claim 1, characterized in that: The mounting base (8) has a locking groove (11) inside, and the inner diameter of the locking groove (11) is adapted to the outer diameter of the mounting part (7).

4. The insert-type mold cavity bottom structure according to claim 3, characterized in that: The engaging groove (11) is provided with a driven plate (12) inside, and a groove (13) is provided in the bottom wall of the mounting base (8) below the driven plate (12). A return spring (15) is connected between the bottom end of the driven plate (12) and the inner wall of the groove (13).

5. The insert-type mold cavity bottom structure according to claim 4, characterized in that: Both outer walls of the driven plate (12) are fixedly connected with drive rods (14) extending into the interior of the mounting base (8), and the drive rods (14) are slidably connected to the inner wall of the mounting base (8).

6. The insert-type mold cavity bottom structure according to claim 5, characterized in that: The mounting base (8) has a gear shaft (16) installed inside, and the end of the gear shaft (16) is fixedly connected to the bottom end of the connecting rod (10).

7. The insert-type mold cavity bottom structure according to claim 6, characterized in that: One side of the gear shaft (16) is meshed with a drive gear plate (17), and the outer wall of the drive gear plate (17) is fixedly connected with a synchronizing rod (18) for driving the drive gear plate (17), while the other end of the synchronizing rod (18) extends to the outer wall of the drive rod (14) and is fixedly connected to the outer wall of the drive rod (14).

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