Automatic demolding mold with front mold provided with internal threads

Abstract

The utility model discloses an automatic demoulding mould with an internal thread on a front mould, which relates to the technical field of moulds, and comprises a top plate, a middle plate, an upper mould plate, a lower mould plate, space plates and a bottom plate which are sequentially arranged, a movable ejector plate is arranged between the space plates, one side of the ejector plate is connected with an ejector plate fixing plate, and the other side of the ejector plate is connected with a lower mould fixing plate. The mold is characterized in that the upper mold plate and the lower mold plate are provided with a front mold core and a rear mold core respectively, one side of the front mold core is connected with a threaded rod, one end of the threaded rod is connected with a first gear, and the mold further comprises two racks installed in the middle plate in a sliding mode. Under the driving of the oil cylinder, the racks push the gear of the threaded rod to rotate, the rack wheel drives the rack on the other side to linearly move, and the rack on the other side drives the gear of the threaded rod on the other side to rotate, so that threads can be smoothly and rotationally separated from the front mold. The automatic thread demoulding structure is arranged on the front mold and is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely is a mould with automatic demoulding of inner thread of front mould. BACKGROUND

[0002] At present, injection mould is the tool matched with plastic forming machine in plastic processing industry, which gives plastic products complete configuration and accurate size. At present, the injection mould of screw piece in domestic adopts threaded core to cast and form, and the automatic thread demoulding is generally designed in rear mould, if it is designed in front mould, the sequence of front mould oil cylinder action and the driving force of driving tooth bar need to be solved. Therefore, the utility model provides a mould with automatic demoulding of inner thread of front mould. CONTENT OF UTILITY MODEL

[0003] TECHNICAL PROBLEM

[0004] The utility model discloses a mould with automatic demoulding of inner thread of front mould, which makes up for the deficiency of prior art.

[0005] TECHNICAL SCHEME

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a mould with automatic demoulding of inner thread of front mould, which comprises top plate, middle plate, upper mould plate, lower mould plate, air space edition and bottom plate which are sequentially arranged, movable ejection plate is arranged between the air space edition, one side of the ejection plate is connected with ejection plate fixed plate, the upper mould plate and the lower mould plate are respectively provided with front mould core and rear mould core, one side of the front mould core is connected with tooth bar, one end of the tooth bar is connected with gear one, two racks are slidably installed in the middle plate, the two racks are meshed and connected with large gear, the large gear has two, the two large gears are rotatably installed on the middle plate, the two racks are also meshed and connected with gear one, one side of the middle plate is also fixedly installed with hydraulic oil cylinder, the output end of the hydraulic oil cylinder is fixedly connected with one of the racks, the hydraulic oil cylinder and one of the racks are connected, the rack drives the tooth bar to rotate, two large transmission gears are designed in the middle of the two tooth bars, the two large transmission gears are meshed with the racks, small gears are designed on the tooth bars on both sides, the small gears of the tooth bars are meshed with the racks, the racks drive the gears of the tooth bars to rotate under the driving of the oil cylinder, the large gear drives the other rack to move linearly, the other rack drives the gears of the tooth bar on the other side to rotate, so that the thread can be smoothly rotated and demoulded in the front mould, and the automatic thread demoulding structure is arranged in the front mould, which is convenient to use.

[0007] Preferably, the tooth bar has multiple, and the number of gear one is also multiple.

[0008] Preferably, the tooth bar is provided with a screw thread at one end away from the gear one, and the screw thread is arranged in the front mold core.

[0009] Preferably, the tooth bar is further fixedly connected with a bearing.

[0010] Preferably, the rack is made of self-lubricating alloy copper.

[0011] Preferably, the top plate, the middle plate, the upper mold plate and the front mold core form a front mold, and the lower mold plate, the blank plate and the bottom plate, the ejection plate, the ejection plate fixed plate and the rear mold core form a rear mold.

[0012] Beneficial effects:

[0013] Compared with the prior art, the front mold with internal thread automatic demolding mold has the following beneficial effects:

[0014] The utility model discloses a hydraulic cylinder adds two racks drive, and hydraulic cylinder and one of the racks are connected, and the rack drives tooth bar to carry out the rotary motion, designs two big transmission gears in the middle of two side tooth bars, and two big transmission gears are mutually engaged with the rack, and the tooth bar on two sides is designed with pinion, and the pinion of tooth bar is engaged with the rack, and under the drive of oil cylinder, the rack pushes the gear of tooth bar and rotates, and the big gear drives the rack of the other side and carries out the linear motion, and the rack of the other side drives the gear of the tooth bar of the other side and rotates again, can thus rotate and demold the screw thread in front mold smoothly, and the structure is set up, and the automatic demolding screw thread structure is set up in front mold, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, below description in the drawing is only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0016] Fig. 1 It is the sectional view structural schematic diagram of the utility model;

[0017] Fig. 2 It is the sectional view structural schematic diagram of another angle of the utility model;

[0018] Fig. 3 It is the structural schematic diagram of tooth bar of the utility model.

[0019] In the drawing:

[0020] 1, top plate; 2, middle plate; 3, upper die plate; 4, lower die plate; 5, empty space plate; 6, bottom plate; 7, ejection plate; 8, ejection plate fixing plate; 9, front mold core; 10, rear mold core; 11, tooth bar; 12, gear one; 13, rack; 14, large gear; 15, hydraulic oil cylinder. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a front mold thread automatic demolding die, including the top plate 1 of sequentially arranged middle plate 2, upper die plate 3, lower die plate 4, empty space plate 5 and bottom plate 6, movable ejection plate 7 is arranged between empty space plate 5, the side of ejection plate 7 is connected with ejection plate fixing plate 8, upper die plate 3 and lower die plate 4 are provided with front mold core 9 and rear mold core 10 respectively, the side of front mold core 9 is connected with tooth bar 11, and one end of tooth bar 11 is connected with gear one 12;It further includes two racks 13 slidably installed in the inside of middle plate 2, rack 13 uses self-lubricating alloy copper, two racks 13 are meshed and connected with large gear 14, large gear 14 has two, and two large gears 14 are rotatably installed on middle plate 2, two racks 13 are also meshed and connected with gear one 12, one side of middle plate 2 is also fixedly installed with hydraulic oil cylinder 15, the output end of hydraulic oil cylinder 15 is fixedly connected with one of rack 13, and it is driven using hydraulic oil cylinder plus two racks, hydraulic oil cylinder is connected with one of rack, and rack drives tooth bar to rotate, two large transmission gears are designed in the middle of two side tooth bars, two large transmission gears are meshed with rack, small gear is designed on the tooth bar of two sides, the small gear of tooth bar is meshed with rack, and rack pushes the gear of tooth bar to rotate under the drive of oil cylinder, large gear drives the rack of other side to move linearly, and the rack of other side drives the gear of tooth bar of other side to rotate, so that screw thread can be rotated and demoulded smoothly in front mold, the setting of the above structure makes that automatic demolding thread structure is arranged in front mold, and it is convenient to use.

[0023] Please refer to Fig. 1 And Fig. 3 Tooth bar 11 has multiple, and the number of corresponding gear one 12 is also multiple, and the end, away from gear one 12, of tooth bar 11 is provided with screw thread, and screw thread is arranged in front mold core 9, and bearing is further fixedly connected on the outer periphery of tooth bar 11.

[0024] The top plate 1, the middle plate 2, the upper die plate 3 and the front die core 9 constitute a front mold, and the lower die plate 4, the air space plate 5, the bottom plate 6, the ejection plate 7, the ejection plate fixing plate 8 and the rear die core 10 constitute a rear mold.

[0025] Working principle: the hydraulic cylinder is connected with one of the racks, the rack drives the toothed bar to rotate, two large transmission gears are designed in the middle of the toothed bars, the two large transmission gears mesh with the rack, small gears are designed on the toothed bars, the small gears of the toothed bars mesh with the rack, under the drive of the oil cylinder, the rack pushes the gear of the toothed bar to rotate, the large gear drives the other rack to move linearly, the other rack drives the gear of the other toothed bar to rotate, so that the thread can be smoothly rotated and taken out from the front mold.

[0026] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A mold with an internal thread for automatic demoulding of a front mold, comprising a top plate (1), a middle plate (2), an upper mold plate (3), a lower mold plate (4), a spacer plate (5) and a bottom plate (6) arranged in sequence, a movable ejector plate (7) being arranged between the spacer plates (5), and an ejector plate fixing plate (8) being connected to one side of the ejector plate (7), characterized in that: The upper mold plate (3) and the lower mold plate (4) are respectively provided with a front mold core (9) and a rear mold core (10); one side of the front mold core (9) is connected to a tooth rod (11); one end of the tooth rod (11) is connected to a gear 1 (12); The invention also includes two racks (13) slidably mounted inside the middle plate (2), a large gear (14) being meshed and connected between the two racks (13), two large gears (14) being rotatably mounted on the middle plate (2), the two racks (13) being meshed and linked with gear one (12), a hydraulic cylinder (15) being fixedly mounted on one side of the middle plate (2), and an output end of the hydraulic cylinder (15) being fixedly connected to one of the racks (13).

2. The mold with internal thread for automatic demoulding according to claim 1, characterized in that: There are multiple tooth rods (11), and the number of corresponding gears (12) is also multiple.

3. The mold with internal thread for automatic demoulding according to claim 1, characterized in that: The end of the tooth rod (11) away from the gear one (12) is provided with a screw thread, and the screw thread is arranged in the front mold core (9).

4. The mold with internal threads for automatic demoulding according to claim 1, characterized in that: The outer periphery of the tooth rod (11) is also fixedly connected with a bearing.

5. The mold with internal thread for automatic demoulding according to claim 1, characterized in that: The rack (13) is made of self-lubricating copper alloy.

6. The mold with internal threads for automatic demoulding according to claim 1, characterized in that: The top plate (1), the middle plate (2), the upper mold plate (3) and the front mold core (9) constitute the front mold, and the lower mold plate (4), the spacer plate (5) and the bottom plate (6), the ejection plate (7), the ejection plate fixing plate (8) and the rear mold core (10) constitute the rear mold.

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