CN219705965U - Mould moving device of direct press - Google Patents

Abstract

The utility model discloses a die moving device of a direct press, wherein a plurality of first racks which are uniformly distributed on the same circumference are axially arranged on the inner cavity wall of a rotary holding bush, guide grooves are formed between two adjacent first racks, a tooth holding rod penetrates through the rotary holding bush, a plurality of second racks which are uniformly distributed on the same circumference are arranged at the tail part of the tooth holding rod, tooth retreating grooves are formed between two adjacent second racks, the distance between two adjacent teeth on the first racks is equal to the distance between two adjacent teeth on the second racks, and the teeth on the first racks can rotate into the tooth gaps between two adjacent teeth on the first racks. The beneficial effects of the utility model are as follows: when the high pressure is generated, the axial thrust can be shared by a plurality of teeth, so that the service life of the teeth is prolonged, and the reliability of the high pressure generation of the direct press is ensured.

Description

Mould moving device of direct press

Technical Field

The utility model relates to an injection molding direct press, in particular to a die shifting device of a direct press.

Background

The die locking structure of the hinge type injection molding machine is uneven in stress on the die plate, and the die plate is prone to bending after stress decomposition. Under the conditions of high injection pressure and high mold locking force, the mold plate works in bending deformation for a long time, so that the service life is seriously influenced, and the mold is seriously influenced because the deformation of the mold plate is finally acted on the mold. The low pressure die protection area is very close to the machine hinging force amplification area, resulting in poor reliability of low pressure die protection.

The direct-pressure injection molding machine is different from a hinged injection molding machine, the axial stress of the center of the template is greatly improved, the bending deformation tendency of the template is greatly improved, the stress balance of each point of the mold is ensured, and a uniform and stable product is produced. The direct-pressure machine template has high parallelism and good precision retention, and the precision retention after repeated disassembly and assembly is good. The whole process mode locking force of the direct-pressure machine is adjustable, and an amplifying area of the machine hinging machine force does not exist, so that the low-pressure die is more stable and reliable.

The direct-pressure injection molding machine needs to start high pressure in the injection molding process, has very large axial thrust in the high pressure starting process, and if the axial thrust is not shared, local stress concentration is easily caused, so that the tooth holding rod is damaged, and great economic loss is caused for enterprises.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a die shifting device of a direct press.

The aim of the utility model is achieved by the following technical scheme: the utility model provides a straight die machine shifting device, including the tailboard, high pressure lock die cylinder cap, high pressure lock die cylinder piston, high pressure lock die cylinder cap installs on the terminal surface of tailboard, and seal between high pressure lock die cylinder cap and the tailboard, the one end sliding fit of high pressure lock die cylinder piston is in the tailboard, the other end sliding fit of high pressure lock die cylinder piston is in high pressure lock die cylinder cap, the afterbody of tailboard is installed and is fixed a section of thick bamboo, install the shifting die axle in the fixed section of thick bamboo, the cover is equipped with the tooth pole on the shifting die axle, and the tooth pole is embraced and is moved to have first sealed oil pocket and second sealed oil pocket between the die axle, install the rotatory group spare that can circumferentially rotate in the high pressure lock die cylinder piston, rotatory group spare is including rotatory group spare and rotatory group spare, rotatory group spare is rotatory on the inner chamber wall of rotatory group spare is provided with a plurality of evenly distributed first racks on same circumference, form the tooth groove that embraces between the first adjacent tooth pole, form tooth groove that embraces, and tooth pole and tooth is held in the tooth pole and the tooth is held in the tooth pole is held in the tooth between the tooth pole on the first tooth pole of tooth that the second is equal to the tooth is held in the tooth pole of tooth between the second.

Optionally, the tooth holding rod is further provided with guide teeth corresponding to the second racks, and the guide teeth are located in front of the corresponding second racks.

Optionally, the front end surface of the guide tooth is an inclined surface.

Optionally, the length of the first rack is smaller than the length of the second rack.

Optionally, the front end face of the tooth of the first rack is a vertical face, and the rear end face of the tooth of the second rack is also a vertical face.

Optionally, the first rack and the second rack are six.

The utility model has the following advantages: the die shifting device of the direct press machine can share the axial thrust through a plurality of tooth groups when the direct press machine starts high pressure, thereby prolonging the service life of the teeth and ensuring the reliability of the direct press machine for starting high pressure.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the tooth-holding rod when the tooth-holding rod is reset;

FIG. 3 is a schematic view of the structure of the direct press mold shifting device when the direct press mold shifting device is at high pressure;

FIG. 4 is a schematic view of the structure of the tooth bar;

FIG. 5 is a schematic view of the structure of the swivel assembly;

in the figure, a 101-tail plate, a 102-high-pressure mold locking cylinder cover, a 103-high-pressure mold locking cylinder piston, a 104-mold moving shaft, a 105-tooth holding rod, a 106-first sealed oil cavity, a 107-second sealed oil cavity, a 108-rotating holding assembly, a 109-fixed cylinder, 111-guide teeth, 112-second racks, 113-tooth withdrawal grooves, 121-rotating holding bushings, 122-guide grooves, 123-first racks and 124-rotating brake cylinder assemblies.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, or are directions or positional relationships conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and for simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, fig. 2 and fig. 3, a direct press die shifting device comprises a tail plate 101, a high-pressure die locking cylinder cover 102 and a high-pressure die locking cylinder piston 103, wherein the high-pressure die locking cylinder cover 102 is installed on the end face of the tail plate 101, a seal is arranged between the high-pressure die locking cylinder cover 102 and the tail plate 101, one end of the high-pressure die locking cylinder piston 103 is in sliding fit in the tail plate 101, the other end of the high-pressure die locking cylinder piston 103 is in sliding fit in the high-pressure die locking cylinder cover 102, a fixed cylinder 109 is installed at the tail part of the tail plate 101, a die shifting shaft 104 is installed in the fixed cylinder 109, a tooth holding rod 105 is sleeved on the die shifting shaft 104, a first seal oil cavity 106 and a second seal oil cavity 107 are arranged between the tooth holding rod 105 and the die shifting shaft 104, a rotary holding assembly 108 capable of rotating circumferentially is installed in the high-pressure die locking cylinder piston 103, the rotary holding assembly 108 comprises a rotary press 121 and a rotary cylinder assembly 124, the rotary cylinder assembly 124 drives the rotary holding sleeve 121 to rotate in the high-pressure die locking cylinder cover 103, that is in the circumferential direction, and the rotary cylinder assembly is in the rotary cylinder assembly 124 is not in the rotary cylinder assembly, and the rotary cylinder assembly is in the circumferential direction of the rotary cylinder assembly, which is in the rotary cylinder assembly, and the rotary cylinder assembly is in the rotary cylinder assembly and the rotary cylinder assembly is in the general in the rotary cylinder assembly.

In this embodiment, as shown in fig. 5, a plurality of first racks 123 uniformly distributed on the same circumference are axially disposed on the inner cavity wall of the rotary holding sleeve 121, a guiding groove 122 is formed between two adjacent first racks 123, a tooth holding rod passes through the rotary holding sleeve 121, as shown in fig. 2, 3 and 4, a plurality of second racks 112 uniformly distributed on the same circumference are disposed at the tail of the tooth holding rod 105, a tooth-withdrawing groove 113 is formed between two adjacent second racks 112, the spacing between two adjacent teeth on the first racks 123 is equal to the spacing between two adjacent teeth on the second racks 112, and the teeth on the first racks 123 can rotate into the tooth grooves between two adjacent teeth on the first racks 123, as shown in fig. 3, when the tooth holding rod 105 needs to extend, oil is injected into the second sealing oil cavity 107, at this time, the axial projection of the second racks 112 is located in the axial projection of the guiding groove 122 on the axial projection surface, and then in the process of stretching out the tooth holding rod 105, the second rack 112 enters the guide groove 122, when the guide rod stretches out to the right, then the rotary brake cylinder assembly 124 works, so that the rotary brake cylinder assembly 121 rotates, teeth of the second rack 112 enter tooth grooves of the first rack 123, then the direct press starts high pressure, the high-pressure die locking cylinder piston 103 stretches out to drive the rotary brake assembly 108 to axially move together, when teeth of the first rack 123 abut against teeth of the second rack 112, the high-pressure die locking cylinder piston 103, the rotary brake cylinder assembly 108 and the tooth holding rod 105 synchronously move, when the direct press starts high pressure and needs to reset, the rotary brake cylinder assembly 124 works, so that the rotary brake cylinder assembly 121 reversely rotates, teeth of the second rack 112 exit tooth grooves of the first rack 123, and the second rack 112 enters the guide groove 122, the first rack 123 is located in the tooth-withdrawing groove 113, and then hydraulic oil is injected into the first sealed oil cavity 106, as shown in fig. 2, at this time, the tooth-holding rod 105 is contracted and reset, then the high-pressure die-locking cylinder piston 103 is reset, and the high-pressure starting of the direct press is finished.

In this embodiment, as shown in fig. 4, the tooth holding rod 105 is further provided with a guide tooth 111 corresponding to the second rack 112, the guide tooth 111 is located in front of the corresponding second rack 112, when the tooth holding rod 105 is in a reset state, the guide tooth 111 is located at the rear side of the rotary holding sleeve 121, further, when the guide tooth 111 is matched with the guide groove 122, the guide tooth 111 and the guide groove 122 are in a sliding fit relationship when the guide tooth 111 is in the guide groove 122, and further, the circumferential position of the tooth holding rod 105 can be limited through the guide tooth 111, that is, when the circumferential position of the tooth holding rod 105 deviates, the guide tooth 111 cannot enter the guide tooth 111, and further, the guide tooth 111 cannot damage the first rack 123, and further, the front end face of the guide tooth 111 is a bevel, and the rear end inner cavity of the rotary holding sleeve 121 is also provided with a bevel, so when the circumferential position of the tooth holding rod 105 deviates, the bevel of the guide tooth 111 abuts against the bevel of the tooth holding rod 105, and the tooth holding rod 105 cannot move axially forward, and the impact of the rotary holding sleeve 121 is reduced by the bevel.

In this embodiment, as shown in fig. 2 and 3, the length of the first rack 123 is smaller than that of the second rack 112, so that when the direct-pressure machine starts to press at high pressure, teeth on the first rack 123 can be abutted against teeth on the second rack 112, so that axial thrust of the direct-pressure machine when the direct-pressure machine starts to press at high pressure can be supported by the teeth components of the first rack 123 and the second rack 112, impact loads of a single tooth on the first rack 123 and a single tooth on the second rack 112 are reduced, service lives of the first rack 123 and the second rack 112 are prolonged, and reliability of the direct-pressure machine in starting to press at high pressure is guaranteed.

In this embodiment, as shown in fig. 2 and 3, the front end face of the tooth of the first rack 123 is a vertical face, and the rear end face of the tooth of the second rack 112 is also a vertical face, so that after the first rack 123 and the second rack 112 abut, there is no radial component force, thereby ensuring the reliability of the high-pressure operation of the direct press.

In this embodiment, as shown in fig. 4 and fig. 5, the first rack 123 and the second rack 112 are six, and 8 teeth and 7 tooth grooves are formed on the first rack 123, so that when the direct-pressing machine starts high pressure, the axial thrust is shared by 42 groups of teeth, and the reliability of the direct-pressing machine for starting high pressure is further ensured.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a straight press die shifting device, includes tailboard, high-pressure mode locking cylinder cap, high-pressure mode locking cylinder piston, and high-pressure mode locking cylinder cap installs on the terminal surface of tailboard, and seals between high-pressure mode locking cylinder cap and the tailboard, and high-pressure mode locking cylinder piston's one end sliding fit is in the tailboard, and high-pressure mode locking cylinder piston's the other end sliding fit is in high-pressure mode locking cylinder cap, the fixed section of thick bamboo is installed to the afterbody of tailboard, install the moving die axle in the fixed section of thick bamboo, the cover is equipped with the tooth pole on the moving die axle, just the tooth pole with it has first sealed oil pocket and second sealed oil pocket to move between the die axle, but install circumferential rotation's rotatory group in the high-pressure mode locking cylinder piston, rotatory group is including embracing bush and rotatory brake cylinder group spare, rotatory brake cylinder group spare drive the bush embraces the circumferential rotation in the high-pressure mode locking cylinder piston, its characterized in that: the inner cavity wall of the rotary holding bush is axially provided with a plurality of first racks which are uniformly distributed on the same circumference, guide grooves are formed between two adjacent first racks, the holding tooth rod penetrates through the rotary holding bush, the tail of the holding tooth rod is provided with a plurality of second racks which are uniformly distributed on the same circumference, a tooth withdrawal groove is formed between two adjacent second racks, the distance between two adjacent teeth on the first racks is equal to the distance between two adjacent teeth on the second racks, and teeth on the first racks can rotate to enter the tooth grooves between two adjacent teeth on the first racks.

2. The linear press die shifting device of claim 1, wherein: the tooth holding rod is further provided with guide teeth corresponding to the second racks, and the guide teeth are positioned in front of the second racks.

3. A linear press die shifting device as claimed in claim 2, wherein: the front end face of the guide tooth is an inclined face.

4. A linear press die shifting device according to any one of claims 1-3, characterized in that: the length of the first rack is smaller than that of the second rack.

5. The linear press die shifting device of claim 4, wherein: the front end face of the tooth of the first rack is a vertical face, and the rear end face of the tooth of the second rack is also a vertical face.

6. The linear press die shifting device of claim 5, wherein: the number of the first racks and the second racks is six.