CN219256297U

CN219256297U - Injection mould for adjusting nut

Info

Publication number: CN219256297U
Application number: CN202223327708.7U
Authority: CN
Inventors: 黄维; 黄德兴
Original assignee: Foshan Keshuo Precision Injection Molding Co ltd
Current assignee: Foshan Keshuo Precision Injection Molding Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-27
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses an injection mold for adjusting nuts, which comprises a front mold core, a rear mold core, a threaded shaft, a driving device, ejector pins, ejector pin plates, a panel, a water gap plate, a front mold plate, a rear mold plate, square iron blocks and a bottom plate which are sequentially arranged from top to bottom, wherein the driving device comprises an oil cylinder and a gear transmission assembly, the oil cylinder is arranged on the outer side of the front mold plate, the gear transmission assembly is connected with a piston rod of the oil cylinder and is arranged on the front mold plate, the threaded shafts are six and are matched with the gear transmission assembly, the threaded ends of the threaded shafts are arranged at the front mold core, the other ends of the threaded shafts are arranged on the water gap plate, the ejector pin plates are arranged below the rear mold plate, one ends of the ejector pins are fixed on the ejector pin plates, and the other ends of the ejector pins can extend out of the rear mold core. The oil cylinder is arranged, so that larger hydraulic pressure can be formed, and a plurality of threaded shafts can be driven to rotate conveniently; the number of the threaded shafts is six, so that the injection molding quantity of single products can be greatly increased, demolding power is provided through the oil cylinder, the demolding force requirement can be met, and the production efficiency of the products is greatly improved.

Description

Injection mould for adjusting nut

Technical Field

The utility model belongs to the field of injection molds, and particularly relates to an injection mold for adjusting nuts.

Background

The plastic nut has the characteristics of good insulating property, strong anti-interference capability and good acid and alkali resistance, so the plastic nut is widely applied to the electronic field. However, the adjusting nut (as shown in fig. 1) is easy to be broken during injection molding and demolding, so that the reject ratio is high. In order to improve the yield, the existing partial injection mold adopts a thread withdrawing mode, such as a plastic nut injection mold disclosed in application number 201510643209.4, and drives a movable mold to move through screw rod rotation. However, the structure adopts the rotation of the screw rod to control the moving direction of the movable mould to lock the mould, so that the mould locking force is insufficient, and the mould is limited by the transmission force of the screw rod during demoulding, so that only two nuts can be molded each time during injection molding, and the production efficiency is lower.

Disclosure of Invention

The object of the present utility model is to provide an injection mold for adjusting nuts which solves at least one of the above problems.

According to one aspect of the utility model, there is provided an injection mold for adjusting nuts, comprising a front mold core, a rear mold core, a threaded shaft, a driving device, a thimble plate, a panel, a nozzle plate, a front mold plate, a rear mold plate, square iron blocks and a bottom plate which are sequentially arranged from top to bottom, wherein the front mold core and the rear mold core are correspondingly arranged, the front mold core is arranged on the front mold plate, the rear mold core is arranged on the rear mold plate, the driving device comprises an oil cylinder and a gear transmission assembly, the oil cylinder is arranged on the outer side of the front mold plate, the gear transmission assembly is connected with a piston rod of the oil cylinder and is arranged on the front mold plate, the threaded shaft is six and is matched with the gear transmission assembly, the threaded end of the threaded shaft is arranged at the front mold core, the other end of the threaded shaft is arranged on the nozzle plate, the thimble plate is arranged below the rear mold plate, one end of the thimble is fixed on the thimble plate, and the other end of the thimble can extend out of the rear mold core.

The beneficial effects of the utility model are as follows: through being provided with the hydro-cylinder, can form great hydraulic pressure, be convenient for drive gear drive subassembly and rotate to drive the screw thread axle again and rotate, be convenient for drive screw thread axle forward direction and reverse movement, conveniently adjust the nut after accomplishing of moulding plastics, through the screw thread end reverse rotation of screw thread axle, realize moving back the tooth, conveniently the drawing of patterns has guaranteed the quality of product; meanwhile, the number of the threaded shafts is six, so that the injection molding quantity of single products can be greatly increased, demolding power is provided through the oil cylinder, the demolding force requirement can be met, and the production efficiency of the products is greatly improved.

In some embodiments, the gear drive assembly includes rack, transmission shaft, first gear, second gear and third gear, and the one end and the piston rod of hydro-cylinder of rack are connected, and first gear and second gear all overlap and establish on the transmission shaft, and the mouth of a river board is located to the one end of transmission shaft, and on the front mould board was located to the other end, first gear engaged with the rack, and the external diameter of second gear is greater than the external diameter of first gear, and the third gear is six, overlaps respectively to establish on six screw shafts, and the third gear meshes with the second gear. Therefore, the screw thread shaft is convenient to drive to rotate and control the moving direction through the transmission of each structure in the gear transmission assembly.

In some embodiments, six third gears are evenly distributed on the outer circumference of the second gear. Therefore, the uniformity of the stress of the second gear is facilitated, and the overall service life is prolonged conveniently.

In some embodiments, the injection mold of the adjusting nut further comprises a mounting frame, the mounting frame is U-shaped, the cylinder body of the oil cylinder is fixed on the mounting frame, and the mounting frame is fixed on the outer side of the front template. From this, through being equipped with the mounting bracket, can make things convenient for the installation of hydro-cylinder, and the mounting bracket is the U type, can play the guard action to the rack.

In some embodiments, the injection mold of the adjusting nut further comprises a spring, the rear mold plate is provided with a first mounting hole, the ejector plate is provided with a second mounting hole, one end of the spring is arranged in the first mounting hole, and the other end of the spring is arranged in the second mounting hole. By providing the spring, the ejector plate can be pushed by the rebound force of the spring to reset.

In some embodiments, the injection mold of the adjusting nut further comprises a guide post, one end of the guide post is fixed on the panel, the other end of the guide post penetrates through the nozzle plate and the front mold plate and stretches out backwards, a guide hole is formed in the rear mold plate, and the other end of the guide post can be inserted into the guide hole. Therefore, the guide post is arranged, so that the front template and the rear template can be conveniently guided and clamped.

In some embodiments, the injection mold of the adjusting nut further comprises a guide sleeve, wherein the guide sleeve is sleeved in the guide hole, and the guide sleeve can be matched with the guide post. Therefore, the guide sleeve is arranged, so that the guide post and the guide hole can be prevented from being in direct contact, and the direct friction between the guide post and the guide hole is reduced.

Drawings

FIG. 1 is a schematic view of the structure of an injection molded product adjustment nut;

FIG. 2 is a schematic view of the injection mold clamped state of the adjusting nut of the present utility model;

FIG. 3 is a schematic cross-sectional structural view of an injection mold open state of the adjusting nut of the present utility model;

FIG. 4 is a schematic view of the injection mold of the adjusting nut of the present utility model in an open state;

fig. 5 is a schematic view of the structure of the driving device and the threaded shaft in the injection mold of the adjusting nut of the utility model.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Reference is made to fig. 2 to 5. The utility model provides an adjusting nut's injection mold, including preceding mold core 1, back mold core 2, screw thread axle 3, drive arrangement 4, thimble 5, thimble board 6 and panel 7 that is arranged in proper order from top to bottom, the mouth of a river board 8, preceding template 9, back template 10, square iron piece 20 and bottom plate 30, preceding mold core 1 corresponds the setting with back mold core 2, preceding mold core 1 locates on preceding template 9, back mold core 2 locates on back mold board 10, drive arrangement 4 includes hydro-cylinder 41 and gear drive assembly 42, the outside of preceding template 9 is located to hydro-cylinder 41, gear drive assembly 42 is connected with the piston rod of hydro-cylinder 41, and locate on preceding template 9, screw thread axle 3 is six, all cooperate with gear drive assembly 42, screw thread end 31 (i.e. the one end that is used for shaping adjusting nut's internal thread) is located preceding mold core 1 department, the other end is located on the mouth of a river board, thimble board 6 is located the below of back mold board 10, the one end of thimble 5 is fixed on thimble board 6, the other end can stretch out back mold core 2.

When the adjusting nut (shown in fig. 1) needs to be injection molded, the front template 9 and the rear template 10 are matched, so that the front mold core 1 is matched with the rear mold core 2, the threaded end of the threaded shaft 3 is rotated and extended into a corresponding cavity formed by the front mold core 1 and the rear mold core 2, and then injection molding is performed. After injection molding is completed, the oil cylinder 41 drives the gear transmission assembly 42, and the gear transmission assembly 42 drives the threaded shaft 3 to reversely rotate, so that the threaded shaft 3 reversely rotates to retract teeth, and the damage of the threads of a product during demolding and ejection is avoided.

The six threaded shafts 3 are arranged, so that the number of products formed by single injection molding of the die can be conveniently increased, and the production efficiency is improved.

The gear transmission assembly 42 comprises a rack 421, a transmission shaft 422, a first gear 423, a second gear 424 and a third gear 425, one end of the rack 421 is connected with a piston rod of the oil cylinder 41, the first gear 423 and the second gear 424 are sleeved on the transmission shaft 422, one end of the transmission shaft 422 is arranged on the nozzle plate 8, the other end of the transmission shaft 422 is arranged on the front mold plate 9, the first gear 423 is meshed with the rack 421, the outer diameter of the second gear 424 is larger than that of the first gear 423, six third gears 425 are sleeved on the six threaded shafts 3 respectively, and the third gear 425 is meshed with the second gear 424. Therefore, when the piston rod of the oil cylinder 41 stretches and contracts, the rack 421 can be pushed to move, and in the moving process of the rack 421, the first gear 423 is driven to rotate, the first gear 423 drives the transmission shaft 422 to rotate, and accordingly the transmission shaft 422 drives the second gear 424 to rotate; upon rotation of the second gear 424, the third gear 425 may be rotated, thereby rotating the threaded shaft 3. The control of the rotation direction of the threaded shaft 3 can be realized by controlling the extension and retraction of the oil cylinder, so that the upward or downward movement direction of the threaded shaft 3 is controlled, the use is convenient, and the sufficient driving force can be provided.

In the actual assembly, in order to facilitate the screw shaft 3 to move up and down relative to the front mold core 1 during rotation, a screw copper sleeve 80 is fixed on the nozzle plate 8, and the inner wall of the screw copper sleeve 80 is provided with internal threads and is in threaded fit with the other end of the screw shaft 2. Therefore, when the threaded shaft 3 rotates, the threaded shaft can move up and down relative to the threaded copper sleeve 80, and the injection molding and demolding requirements of products are met.

Six third gears 425 are uniformly distributed on the outer circumference of the second gear 424.

The injection mould of adjusting nut still includes mounting bracket 40, and mounting bracket 40 is the U type, and the cylinder body of hydro-cylinder 41 is fixed on mounting bracket 40, and mounting bracket 40 is fixed in the outside of front bezel 9. Wherein the mounting frame 40 is fixed on the outer side of the front template 9 through bolts; the cylinder body of the oil cylinder 41 is fixed on the outer side of the mounting frame 40 through screws, and the piston rod can move back and forth in the U-shaped cavity, so that the piston rod and the rack are protected.

The injection mold of the adjusting nut further comprises a spring 50, a first mounting hole is formed in the rear mold plate 10, a second mounting hole is formed in the thimble plate 6, one end of the spring 50 is arranged in the first mounting hole, and the other end of the spring is arranged in the second mounting hole.

The injection mould of the adjusting nut further comprises a guide post 60, one end of the guide post 60 is fixed on the panel 7, the other end of the guide post 60 penetrates through the water gap plate 8 and the front template 9 and stretches out, a guide hole 102 is formed in the rear template 10, and the other end of the guide post 60 can be inserted into the guide hole 102.

The injection mold of the adjusting nut further comprises a guide sleeve 70, the guide sleeve 70 is sleeved in the guide hole 102, and the guide sleeve 70 can be matched with the guide post 60.

The mold opening and closing process of the injection mold of the adjusting nut comprises the following steps:

during die assembly, the front die plate 9 and the rear die plate 10 are matched, so that the front die core 1 is matched with the rear die core 2, the threaded end of the threaded shaft 3 rotates under the action of the oil cylinder 41 and the gear transmission assembly 42 and moves downwards, so that the threaded end at one end of the threaded shaft 3 rotationally extends into a corresponding cavity formed by the front die core 1 and the rear die core 2, and then injection molding is performed.

After the injection molding of the adjusting nut is completed, the oil cylinder 41 drives the threaded shaft 3 to reversely rotate through the gear transmission assembly 42, so that the threaded shaft 3 reversely withdraws from a product when rotating, and the threads on the threaded shaft 3 are separated from the threads on the product. Then, the front form 9 is separated from the rear form 10; and then the ejector plate 6 moves upwards to drive the ejector plate 6 to eject the product upwards, so that the product is separated from the die, and the demolding is completed.

When the thimble plate 6 moves upwards, the spring 50 is gradually compressed, so that the spring 50 is in a compressed state; after the product is demolded, the ejector plate 6 is pushed to reset downwards under the action of the rebound force of the spring 50, so that the next mold assembly is facilitated.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the present utility model.

Claims

1. The utility model provides an adjusting nut's injection mold, its characterized in that includes preceding mold core (1), back mold core (2), screw thread axle (3), drive arrangement (4), thimble (5), thimble board (6) and panel (7), mouth of a river board (8), preceding template (9), back template (10), square iron piece (20) and bottom plate (30) of arranging from top to bottom in proper order, preceding mold core (1) corresponds the setting with back mold core (2), preceding mold core (1) locates on preceding template (9), back mold core (2) locate on back mold board (10), drive arrangement (4) include hydro-cylinder (41) and gear drive subassembly (42), the outside of preceding template (9) is located in hydro-cylinder (41), gear drive subassembly (42) are connected with the piston rod of hydro-cylinder (41) to locate on preceding template (9), screw thread axle (3) are six, all cooperate with gear drive subassembly (42), the screw thread end of screw thread axle (3) locates preceding mold core (1) department, the other end locates on mouth of a river board, the other end (6) can stretch out behind thimble board (6), the thimble board (2) can be fixed.

2. The injection mold of an adjusting nut according to claim 1, wherein the gear transmission assembly (42) comprises a rack (421), a transmission shaft (422), a first gear (423), a second gear (424) and a third gear (425), one end of the rack (421) is connected with a piston rod of the oil cylinder (41), the first gear (423) and the second gear (424) are both sleeved on the transmission shaft (422), one end of the transmission shaft (422) is arranged on the nozzle plate (8), the other end of the transmission shaft (422) is arranged on the front mold plate (9), the first gear (423) is meshed with the rack (421), the outer diameter of the second gear (424) is larger than the outer diameter of the first gear (423), the third gear (425) is six and is sleeved on six threaded shafts (3) respectively, and the third gear (425) is meshed with the second gear (424).

3. The injection mold of the adjusting nut according to claim 2, characterized in that six third gears (425) are uniformly distributed on the outer circumference of the second gear (424).

4. An injection mould for adjusting nuts according to claim 3, further comprising a mounting frame (40), wherein the mounting frame (40) is U-shaped, the cylinder body of the cylinder (41) is fixed on the mounting frame (40), and the mounting frame (40) is fixed on the outer side of the front template (9).

5. The injection mold of an adjusting nut according to any one of claims 1 to 4, further comprising a spring (50), wherein a first mounting hole is formed in the rear mold plate (10), a second mounting hole is formed in the ejector plate (6), and one end of the spring (50) is disposed in the first mounting hole, and the other end of the spring is disposed in the second mounting hole.

6. The injection mold of an adjusting nut according to claim 5, further comprising a guide post (60), wherein one end of the guide post (60) is fixed on the face plate (7), the other end of the guide post extends out through the nozzle plate (8) and the front mold plate (9), a guide hole (102) is formed in the rear mold plate (10), and the other end of the guide post (60) can be inserted into the guide hole (102).

7. The injection mold of an adjusting nut according to claim 6, further comprising a guide sleeve (70), the guide sleeve (70) being sleeved in the guide hole (102), the guide sleeve (70) being capable of being mated with the guide post (60).