CN218693649U - Telescopic gate rod - Google Patents

Abstract

The utility model provides a telescopic gate stick, which comprises a sliding upper section, a sliding middle section, a conical sliding fixing body and a head seat which are connected in sequence; the sliding upper section is in sliding fit with the sliding middle section, and the sliding middle section is in sliding fit with the conical sliding fixing body; the conical sliding fixing body is formed by integrating a sliding bottom section with the conical body, a flange on the end socket is hidden in the conical sliding fixing body, a connecting seam between the end socket and the conical sliding fixing body is positioned on the end faces of the end socket and the conical sliding fixing body, and a jaw is arranged at the outer straight part of the conical sliding fixing body; the utility model discloses reduced two joints when forming the sprue, more smooth and can make the runner stick slide and smoothly reduce the card and hinder and make things convenient for and the molding machine dismouting within a definite time.

Description

Telescopic gate rod

Technical Field

The utility model relates to a machine-building technical field, in particular to concertina type runner stick.

Background

The improvement is open, and particularly in recent years, the casting field of China is rapidly developed. Various introduced or independently developed novel casting machines are endless, wherein the automatic or intelligent molding machine is one of the casting machines, such as the bamboo shoots appearing in spring after rain. The molding machine is matched with a gate bar through a mold to form a cavity and a casting system required by casting. A gate stick is a mold that forms a sprue in a casting system.

The working process of the molding machine is a process of processing soft sand into a sand mold with certain strength by different methods, and the thickness of the sand mold is changed in the process, so the molding machine needs a gate bar which can stretch along with the thickness of the sand mold to form a sprue. This requires a gate pin that can be extended and retracted freely.

Present retractable type sprue bar, the problem exists: firstly, a plurality of connecting gaps exist, and the edges and corners of a formed sprue are more, so that sand is easy to fall off, and the qualified rate and the quality of castings are influenced; secondly, the sliding is not smooth, and the sliding surface is matched with the double cylindrical surfaces, so that the gate bar is blocked easily when stretching; thereby causing the generation of cavity waste; thirdly, the assembly and disassembly with the equipment are difficult.

The basic structure of a retractable gate stick commonly used in a horizontal parting molding machine in the prior art is shown in fig. 1, which also includes a domestic model and an imported model.

The upper section I101 is slid; a first sliding middle section 102; a sliding bottom section 103; a tapered fixing body 104; a first seal head seat 105; a first spring 106, and the like.

The sliding and connecting seams are more, and two connecting seams and two sliding seams exist at present, for example, in the attached drawing 1, 107 and 109 are a sliding upper section I101 and a sliding middle section I102 columnar sliding surface I, and a sliding middle section I102 and a sliding bottom section 103 columnar sliding surface I, sliding seams are arranged on the sliding upper section I and the sliding middle section I102 columnar sliding surface I, and 111 and 112 are connecting seams, and four seams are summed. When the sprue is formed, the more the seams are, the more the edges are, the more the sand is easy to fall off, and thus quality problems such as sand inclusion, unsmooth surface and the like are caused. The qualification rate and the quality of the casting are influenced.

The two-cylinder fit has the problems that the two cylinders are coaxial in the gate rod manufacturing and making process, such as 107 and 108 in fig. 1, the two cylinders are matched by the sliding upper section and the sliding middle section; 109 and 110 are two cylindrical surfaces that mate the sliding middle section with the sliding bottom section. In the using process, trace sand grains or dust is not prevented from entering, namely two cylindrical surfaces are not coaxial, and sliding is blocked. Once the gate bar is stuck and does not shrink, the produced sand mold is waste.

The third problem exists, and the disassembly and the assembly between the device are difficult. The gate pin and device connection is threaded as at 113 in fig. 1. The gate pin is round in the whole body and smooth in surface. In the process of disassembly and assembly, an operator must directly hold the gate stick by hands, and the gate stick is twisted by friction force between skin and the surface of the gate stick to realize disassembly and assembly. The pouring gate is not firm in mounting or mounting, or difficult to dismount, and difficult to dismount and knock by using a tool, so that artificial concave points are formed on the surface of the pouring gate rod, the concave points further cause unsmooth pouring gate, and the product quality is influenced. A series of problems are caused by difficulty in mounting and dismounting.

The above problems are common in the production practice of the gate bar used by the domestic and foreign horizontal parting molding machine.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a concertina type sprue bar can reduce two joint lines when forming the sprue and make the sprue smooth, guarantees normally in the same direction as smooth reduction card under the sprue bar operating condition and hinders and can make things convenient for the dismantlement and the installation between sprue bar and molding machine.

In order to solve the technical problem, the utility model provides a following technical scheme:

a telescopic gate rod comprises a sliding upper section, a sliding middle section, a conical sliding fixing body and a seal head seat which are connected in sequence; the sliding upper section is in sliding fit with the sliding middle section, and the sliding middle section is in sliding fit with the conical sliding fixing body;

the conical sliding fixing body is formed by integrally forming a sliding bottom section and a conical body; the flange on the seal head seat is hidden in the conical sliding fixing body, and a connecting seam between the seal head seat and the conical sliding fixing body is positioned on the end faces of the seal head seat and the conical sliding fixing body; the straight part of the appearance of the conical sliding fixing body is provided with a jaw.

Preferably, the sliding upper section is a cylindrical semi-closed body, the outer part of the sliding upper section is provided with a first outer sliding surface, the inner part of the sliding upper section is a cavity, and the end surface of the sliding upper section is provided with a first end surface boss.

Preferably, the sliding middle section is a cylindrical body, an outer sliding surface II is arranged outside the sliding middle section, an inner sliding surface I is arranged inside the sliding middle section, and an end surface boss II is arranged on the end surface of the sliding middle section.

Preferably, the tapered sliding fixing body is composed of a straight part and a tapered part, the shape of the tapered sliding fixing body is cylindrical, an inner sliding surface II is arranged in the tapered sliding fixing body, and a spigot and a screw hole are arranged on the end face of the tapered part of the tapered sliding fixing body.

Preferably, the outer end of the seal head seat is provided with a stud, a spring rod is arranged inside the seal head seat, a spring is sleeved on the spring rod and is located inside the telescopic gate rod, the seal head seat and the conical sliding fixing body are connected through the flange, and a screw is arranged at a position, corresponding to a screw hole of the conical sliding fixing body, on the seal head seat.

Preferably, the first outer sliding surface of the upper sliding section and the first inner sliding surface of the middle sliding section slide in a matched manner; the first end surface boss is not matched with the inner diameter of the sliding middle section.

Preferably, a first dust collecting groove is arranged in the middle of the first inner sliding surface of the sliding middle section.

Preferably, an outer sliding surface II of the sliding middle section is matched with the inner sliding surface II of the conical sliding fixing body to slide; and the end surface boss II of the sliding middle section is not matched with the inner diameter of the conical sliding fixing body.

Preferably, a second dust collecting groove is formed in the middle of the second inner sliding surface of the conical sliding fixing body.

Preferably, the flange is fitted with a spigot of the tapered sliding fixture.

Compared with the prior art, the utility model, following beneficial effect has at least:

in the scheme, the telescopic gate bar of the utility model reduces two connecting seams when forming the sprue, so that the formed sprue is smoother; the utility model arranges the dust collecting groove on the sliding middle section and the conical sliding fixing body, and ensures that the sliding fit between the sliding upper section and the sliding middle section and the sliding fit between the sliding middle section and the conical sliding fixing body adopt each pair of sliding bodies to slide in a single fit way so as to realize smooth sliding and reduce blocking resistance when the pouring gate rod works normally; the utility model discloses a set up on the toper slip fixed body and keep silent and make the dismantlement installation between runner stick and molding machine more convenient.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

FIG. 1 is a schematic view of a prior art gate stick configuration;

FIG. 2 is a schematic diagram of a pre-assembly structure of a retractable gate pin;

FIG. 3 is a schematic view of the sliding fit between the sliding upper section and the sliding middle section of the retractable gate pin;

FIG. 4 is a schematic view of the sliding fit between the sliding middle section of the retractable gate stick and the tapered sliding fixture;

FIG. 5 is a schematic structural view of a tapered sliding fixture of a retractable gate pin;

FIG. 6 is a schematic view of the connection between the tapered sliding fixture and the sealing head seat of the retractable gate pin;

fig. 7 is a schematic view of the telescopic gate pin after assembly.

[ reference numerals ]

101. Sliding the upper section I; 102. sliding the middle section I; 103. a sliding bottom section; 104. a conical fixing body; 105. A first sealing head seat; 106. a first spring; 107. a sliding upper section I101 and a sliding middle section I102 are cylindrical sliding surfaces I; 108. a sliding upper section I101 and a sliding middle section I102 are cylindrical sliding surfaces II; 109. a sliding middle section I102 and a sliding bottom section 103 are cylindrical sliding surfaces I; 110. a sliding middle section I102 and a sliding bottom section 103 are cylindrical sliding surfaces II; 111. a connecting gap is formed between the sliding bottom section 103 and the conical fixing body 104; 112. a connecting gap is formed between the conical fixing body 104 and the first seal head seat 105; 113. the gate bar is connected with the molding machine through threads.

1. Sliding the upper section; 11. an outer sliding surface I; 12. an end surface boss I; 2. sliding the middle section; 21. a second outer sliding surface; 22. a second end surface boss; 23. an inner sliding surface I; 24. a first dust collecting groove; 3. a tapered sliding fixture; 31. a second dust collecting groove; 32. a second inner sliding surface; 33. a jaw; 34. a screw hole; 35. stopping the opening; 4. A sealing head seat; 41. a stud; 42. a spring lever; 43. a flange; 5. a spring; 6. and (4) screws.

As shown, specific structures and devices are labeled in the drawings for the purpose of clearly realizing the structure of the embodiments of the present invention, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structures, devices and environments, and those skilled in the art can adjust or modify the devices and environments according to specific needs, and the adjustment or modification is still included in the scope of the appended claims.

Detailed Description

The following describes a telescopic gate stick according to the present invention in detail with reference to the accompanying drawings and specific embodiments. Meanwhile, it is described herein that the following embodiments are the best and preferred embodiments for the purpose of making the embodiments more detailed, and may be implemented in other alternative ways by those skilled in the art; also, the accompanying drawings are included to describe embodiments in greater detail and are not intended to limit the invention in any way.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

In general, terms may be understood at least in part from the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending at least in part on the context. Additionally, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead allow for the presence of other factors not necessarily explicitly described, depending at least in part on the context.

As used herein, the term "nominal" refers to a desired or target value, and a range above and/or below the desired value, of a characteristic or parameter set during a design phase of a production or manufacturing process for a component or process operation. The range of values may be due to slight variations in manufacturing processes or tolerances. As used herein, the term "about" indicates a value of a given quantity that may vary based on the particular technology node associated with the subject semiconductor device. The term "about" may indicate a given amount of a value that varies, for example, within 5% -15% of the value (e.g., ± 5%, ± 10% or ± 15% of the value), based on the particular technology node.

It is understood that the meaning of "on 8230; \8230on", "on 82308230, 8230; \8230on" and "on 8230; \8230a top" in this disclosure should be interpreted in the broadest manner such that "on 8230; \8230on" means not only "directly on" something "but also on" something "with the meaning of intervening features or layers there between, and" on 8230; \8230on "or" on 8230, above "means not only the meaning of" on "or" above "something, but may also include the meaning of" on "or" above "something with no intervening features or layers there between.

Furthermore, spatially relative terms such as "below 8230; below," "lower," "above 8230; above," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature or features, as illustrated in the figures. Spatially relative terms are intended to encompass different orientations in use or operation of the device in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 2 to 7, an embodiment of the present invention provides a telescopic gate stick, which includes a sliding upper section 1, a sliding middle section 2, a tapered sliding fixing body 3 and a sealing seat 4, which are connected in sequence.

As shown in fig. 2 to 4, the upper sliding section 1 is a cylindrical semi-closed body, the outer part of the upper sliding section is provided with an outer sliding surface I11, the inner part of the upper sliding section is a cavity, and the end surface of the upper sliding section is provided with an end surface boss I12.

The sliding middle section 2 is a cylindrical body, the outer part of the sliding middle section is provided with a second outer sliding surface 21, the inner part of the sliding middle section is provided with a first inner sliding surface 23, and the end surface of the sliding middle section is provided with a second end surface boss 22; the middle of the inner sliding surface I23 of the sliding middle section 2 is provided with a first dust collecting groove 24, the inner sliding surface I23 is divided into two sections by the first dust collecting groove 24, the first dust collecting groove 24 is used for temporarily accumulating dust clamped in the operation process, and the first dust collecting groove 24 is cleaned regularly to ensure that the gate stick normally slides smoothly in the working state and further reduce the possibility of blocking.

The sliding upper section 1 is in sliding fit with the sliding middle section 2, and an outer sliding surface I11 of the sliding upper section 1 is in sliding fit with an inner sliding surface I23 of the sliding middle section 2; the end surface boss I12 is not matched with the inner diameter of the sliding middle section 2, and the sliding fit between the sliding upper section 1 and the sliding middle section 2 adopts the single-fit sliding of each pair of sliding bodies, so that the problems of double-fit, difficulty in concentricity and easiness in blocking on the pair of sliding bodies are solved.

As shown in fig. 4 to 5, the tapered sliding fixing body 3 is formed by integrally forming the sliding bottom section and the tapered body, so that a connecting seam between the sliding bottom section and the tapered body in the prior art is reduced, and a formed sprue channel has no connecting seam at the position and is smoother; the shape of the conical sliding fixing body 3 consists of a straight part close to a hexagon and a conical part, the inner part of the conical sliding fixing body is cylindrical, an inner sliding surface II 32 is arranged in the conical sliding fixing body, and the end surface of the conical part of the conical sliding fixing body is provided with a spigot 35 and a screw hole 34; a second dust collecting groove 31 is arranged in the middle of a second inner sliding surface 32 of the conical sliding fixing body 3, the second inner sliding surface 32 is divided into two sections by the second dust collecting groove 31, the second dust collecting groove 31 is used for temporarily accumulating dust clamped in the operation process, the second dust collecting groove 31 is periodically cleaned, normal and smooth operation of the gate rod is guaranteed, and the possibility of blocking is reduced when the first dust collecting groove 31 is small; the nearly hexagonal body straight part of 3 appearances of toper slip fixed body is equipped with keeps silent 33, the more dismantlement and the installation between runner stick and molding machine of being convenient for, and the runner stick installation dismantlement time that can significantly reduce improves runner stick operating stability to improve foundry goods production efficiency and qualification rate.

The sliding middle section 2 is in sliding fit with the conical sliding fixing body 3, and the second outer sliding surface 21 of the sliding middle section 2 is in sliding fit with the second inner sliding surface 32 of the conical sliding fixing body 3; the end surface boss two 22 of the sliding middle section 2 is not matched with the inner diameter of the conical sliding fixing body 3, and the sliding fit between the sliding middle section 2 and the conical sliding fixing body 3 adopts single-fit sliding of each pair of sliding bodies, so that the problems of double-fit, difficulty in concentricity and easiness in blocking on the pair of sliding bodies are solved.

As shown in fig. 2 and 6, the stud 41 is arranged at the outer end of the head seat 4, and the stud 41 is used for connecting the integral gate stick with the molding machine; a spring rod 42 is arranged in the sealing head seat 4, a spring 5 is sleeved on the spring rod 42, the spring rod 42 is used for restraining the spring 5 to keep concentric extension, the spring 5 is positioned in the whole telescopic gate stick, and the spring 5 is used for extension of the gate stick in a working state; the sealing head seat 4 is connected with the conical sliding fixing body 3 through a flange 43, the flange 43 is matched with the spigot 35 of the conical sliding fixing body 3, and the whole inner cavity of the sprue bar is sealed; the flange 43 on the sealing head seat 4 is hidden in the conical sliding fixing body 3, the connecting seam between the sealing head seat 4 and the conical sliding fixing body 3 is positioned on the end surfaces of the sealing head seat 4 and the conical sliding fixing body 3, and after the gate rod is connected with the molding machine, the connecting seam is hidden in the connecting surface and is not exposed, so that a straight runner formed by the gate rod has no connecting seam and is smoother.

The head seat 4 is provided with a screw 6 corresponding to the screw hole 34 of the conical sliding fixing body 3, and the conical sliding fixing body 3 is connected with the head seat 4 through the matching of the screw 6 and the screw hole 34.

The utility model has the technical effects that two connecting seams are reduced when the sprue is formed, so that the formed sprue is smoother; the utility model arranges the dust collecting groove on the sliding middle section and the conical sliding fixing body, and ensures that the sliding fit between the sliding upper section and the sliding middle section and the sliding fit between the sliding middle section and the conical sliding fixing body adopt each pair of sliding bodies to slide in a single fit way so as to realize smooth sliding and reduce blocking resistance when the pouring gate rod works normally; the utility model discloses a set up on the toper slip fixed body and keep silent and make the dismantlement installation between runner stick and molding machine more convenient.

The present invention covers any alternatives, modifications, equivalents, and alternatives falling within the spirit and scope of the invention. In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail as not to unnecessarily obscure aspects of the present invention.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A telescopic gate stick is characterized by comprising a sliding upper section, a sliding middle section, a conical sliding fixing body and a seal head seat which are sequentially connected; the sliding upper section is in sliding fit with the sliding middle section, and the sliding middle section is in sliding fit with the conical sliding fixing body;

the conical sliding fixing body is formed by integrating a sliding bottom section and a conical body; the flange on the seal head seat is hidden in the conical sliding fixing body, and a connecting seam between the seal head seat and the conical sliding fixing body is positioned on the end faces of the seal head seat and the conical sliding fixing body; the straight part of the appearance of the conical sliding fixing body is provided with a jaw.

2. A telescopic gate stick according to claim 1, wherein the sliding upper section is a cylindrical semi-closed body, the outer part of the sliding upper section is provided with a first outer sliding surface, the inner part of the sliding upper section is a cavity, and the end surface of the sliding upper section is provided with a first end surface boss.

3. A telescopic gate pin according to claim 1, wherein the sliding middle section is a cylindrical body, an outer sliding surface second is provided on the outside, an inner sliding surface first is provided on the inside, and an end surface boss second is provided on the end surface.

4. A telescopic gate pin according to claim 1, wherein the tapered slide fastener has an outer shape comprising a substantially hexagonal straight portion and a tapered portion, and an inner shape of the tapered slide fastener is cylindrical and has a second inner sliding surface, and a spigot and a screw hole are provided on an end surface of the tapered portion of the tapered slide fastener.

5. The telescopic gate stick of claim 1, wherein a stud is disposed at an outer end of the seal head seat, a spring rod is disposed inside the seal head seat, a spring is sleeved on the spring rod, the spring is disposed inside the telescopic gate stick, the seal head seat is connected to the tapered sliding fixing body through the flange, and a screw is disposed on the seal head seat at a position corresponding to a screw hole of the tapered sliding fixing body.

6. A telescopic gate pin according to claim 3, wherein a first outer sliding surface of the sliding upper section slides in cooperation with a first inner sliding surface of the sliding middle section; the first end surface boss is not matched with the inner diameter of the sliding middle section.

7. A telescopic gate pin according to claim 3, wherein a first dust collecting groove is provided in the middle of the first inner sliding surface of the sliding middle section.

8. The telescopic gate pin as claimed in claim 4, wherein a second outer sliding surface of the sliding middle section is slidably engaged with the second inner sliding surface of the tapered sliding fixture; and the end surface boss II of the sliding middle section is not matched with the inner diameter of the conical sliding fixing body.

9. A telescopic gate stick as claimed in claim 4, wherein a second dust collecting groove is provided in the middle of the second inner sliding surface of the tapered sliding fixture.

10. A telescopic gate stick as claimed in claim 5, wherein the flange fits into the spigot of the tapered slide fastener.

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