Three-fork special-shaped salt core pressing tool

Abstract

The utility model relates to the technical field of salt core processing, and provides a three-fork special-shaped salt core pressing tool. A first cylindrical hole, a second cylindrical hole, an inverted circular truncated cone hole and a third cylindrical hole are sequentially formed in the lower die base from top to bottom; the lower die is arranged in the first cylindrical hole of the lower die base, and the lower die comprises a lower die outer die, a lower die inner core I, a lower die inner core II and a lower die inner core III which are arranged in a matched mode; the ejection disc is arranged in the lower die base, and the outer surface of the ejection disc is matched with the inner surfaces of the second cylindrical hole and the inverted circular truncated cone hole; the side cylinder ejection base is located below the lower die base, and an inverted-circular-truncated-cone-shaped counter bore is formed in the top face of the side cylinder ejection base; the side cylinder ejection core is arranged on the side cylinder ejection seat, and the top surface of the side cylinder ejection core is connected with the lower die inner core III; and the ejector rod is inserted into the counter bore of the side cylinder ejector core. By means of the scheme, pressing of the three-fork special-shaped salt core can be achieved, density distribution is uniform, the strength of the salt core is high, salt core forming can be guaranteed, and the quality requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to salt core processing technical field, specifically, relate to a kind of three-pronged special-shaped salt core pressing tool. BACKGROUND

[0002] Salt core pressing is extruded into high-density salt core blank by loose, low-density raw material. In related technologies, salt core pressing is generally pressed by exerting pressure on upper die or is formed by guiding two end faces of whole surface structure by upper and lower die through guide column. However, three-pronged special-shaped salt core structure (such as shown in Figure 1 and Figure 2 One of them is in different plane and shorter, and in actual pressing process, it is easy to appear uneven density distribution, low strength and other defects, which can cause salt core to be unable to be formed or quality to be difficult to meet requirements. UTILITY MODEL CONTENT

[0003] The utility model aims at at least solving one of the technical problems existing in prior art or related technologies.

[0004] Therefore, one purpose of the utility model is to provide a kind of three-pronged special-shaped salt core pressing tool, simple and reliable structure, utilize upper die, side cylinder core, side cylinder ejection seat and other designs, without guide column guiding, in the upward movement process of side cylinder ejection seat, drive side cylinder core and lower die inner core III upward movement, first, shorter prong in bottom is pressed, cooperate upper die to realize up and down pressing, then side cylinder core is contacted extrusion ejector plate upward, ejector plate extrusion lower die inner core I and lower die inner core II, balanced pressing is carried out to the whole bottom surface of salt core, so that three-pronged special-shaped salt core density distribution is more uniform, in the case of smaller external force, it can form higher strength, guarantee salt core forming and meet quality requirements.

[0005] In order to achieve the above object, the technical scheme of the utility model provides a kind of trifid special-shaped salt core pressing tool, comprising: fixedly installed on the upper die of four-column two-way press lower pressing mechanism;Fixedly installed on the lower die seat of four-column two-way press workbench, the inside of the lower die seat is sequentially provided with first cylindrical hole, second cylindrical hole, inverted round table hole, third cylindrical hole from top to bottom, and mutually penetrate and pass through the lower die seat;Lower die, be placed in the first cylindrical hole of the lower die seat, the lower die includes cooperatively arranged lower die outer die, lower die inner core I, lower die inner core II and lower die inner core III, and form trifid special-shaped salt core structure cavity with the upper die;Ejector plate, be placed in the inside of the lower die seat, the outer surface of the ejector plate is matched with the inner surface of the second cylindrical hole and the inverted round table hole, the inside of the ejector plate is provided with the through hole of upper section narrow lower section wide;Side cylinder ejector seat, be installed on the upper pressing mechanism of four-column two-way press, and be below the lower die seat, the top surface of the side cylinder ejector seat is provided with inverted round table shape counterbore of upper wide lower narrow;Side cylinder top core, be placed on the side cylinder ejector seat, and insert into the through hole of the ejector plate, the bottom surface of the side cylinder top core is provided with counterbore, and the top surface of the side cylinder top core is connected with the lower die inner core III of trifid special-shaped salt core structure cavity bottom fork-shaped bottom surface;Ejector rod, be fixedly installed on the ejector mechanism of four-column two-way press, the ejector rod is from the inside of the side cylinder ejector seat penetrates, and insert into the counterbore of the side cylinder top core.

[0006] Preferably, the bottom outer circumferential surface of the side cylinder top core is tapered surface of upper wide lower narrow, and is matched with the inner surface of the inverted round table shape counterbore of the side cylinder ejector seat.

[0007] Preferably, the upper outer circumferential surface of the side cylinder top core is matched with the third cylindrical hole of the lower die seat.

[0008] Preferably, the outer diameter of the ejector plate is less than the inner diameter of the lower die outer die, and is greater than the bottom surface spacing of the lower die inner core I and lower die inner core II.

[0009] Preferably, the top surface of the ejector plate is flush with the bottom surface of the first cylindrical hole of the lower die seat, and the bottom outer circumferential surface of the ejector plate is tapered surface of upper wide lower narrow, and is matched with the inner surface of the inverted round table hole of the lower die seat.

[0010] Preferably, the central axis of the lower die seat, the lower die outer die, the side cylinder ejector seat and the ejector rod coincide.

[0011] The trifid special-shaped salt core pressing tool has the following beneficial technical effects:

[0012] (1) The trifid special-shaped salt core pressing tool has simple and reliable structure, can realize the pressing of trifid special-shaped salt core, and has uniform density distribution and high salt core strength, so as to guarantee the molding and quality of salt core.

[0013] (2) The utility model provides a kind of trifurcate special-shaped salt core pressing tool, in the upward movement process of side cylinder ejection seat, drive side cylinder core and lower mould inner core III upward movement, first to the shorter branch fork in bottom is pressed, cooperate upper die can realize up and down pressing, then side cylinder core is contacted extrusion ejector plate upward, ejector plate extrusion lower mould inner core I and lower mould inner core II, the whole bottom surface of salt core is balanced and pressed, so that trifurcate special-shaped salt core density distribution is more uniform, under the condition of smaller external force, it can form higher strength.

[0014] (3) The utility model discloses a kind of trifurcate special-shaped salt core pressing tool, the bottom outer circumferential surface of side cylinder core is designed as the circular conical surface of upper wide lower narrow, and corresponding inverted circular trapezoidal counterbore is designed on side cylinder ejection seat, simultaneously, the outer circumferential surface of the upper portion of side cylinder core is matched with the third cylindrical hole of lower mould seat, to limit the relative position of side cylinder core, guarantee the centring of side cylinder core, so that the position of side cylinder core is substantially not deviated, further guarantee the salt core pressing effect.

[0015] (4) The utility model discloses a kind of trifurcate special-shaped salt core pressing tool, the bottom outer circumferential surface of ejector plate is designed as the circular conical surface of upper wide lower narrow, and corresponding inverted circular trapezoidal hole is designed on lower mould seat, to limit the relative position of ejector plate, guarantee the centring of ejector plate, while the outer diameter of ejector plate is reasonably designed, guarantee the pressing effect, and can also realize the effect of ejection demoulding.

[0016] (5) The utility model discloses a kind of trifurcate special-shaped salt core pressing tool, without being guided by guide column, it can guarantee that the position of each component is substantially not deviated in movement process.

[0017] The additional aspects and advantages of the utility model will be given in the following description part, part will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and more readily understood from the description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic view showing trifurcate special-shaped salt core structure is shown;

[0020] Figure 2 A cross-sectional schematic view showing trifurcate special-shaped salt core structure is shown;

[0021] Figure 3 A structure schematic view showing a kind of trifurcate special-shaped salt core pressing tool according to the embodiments of the utility model is shown;

[0022] Figure 4A structure schematic view of a middle lower die seat of a three-pronged special-shaped salt core pressing tool is shown according to an embodiment of the present application

[0023] Figure 5 A structure schematic view of a middle ejection disc of a three-pronged special-shaped salt core pressing tool is shown according to an embodiment of the present application

[0024] Figure 6 A structure schematic view of a middle side cylinder core ejecting seat of a three-pronged special-shaped salt core pressing tool is shown according to an embodiment of the present application

[0025] Figure 7 A structure schematic view of a middle side cylinder core ejecting seat of a three-pronged special-shaped salt core pressing tool is shown according to an embodiment of the present application

[0026] Figure 8 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a filling state is shown according to an embodiment of the present application

[0027] Figure 9 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a filling state is shown according to an embodiment of the present application Figure 8 An enlarged structure schematic view of A in the middle is shown

[0028] Figure 10 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a pressing state is shown according to an embodiment of the present application

[0029] Figure 11 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a pressing state is shown according to an embodiment of the present application Figure 10 An enlarged structure schematic view of B in the middle is shown

[0030] Figure 12 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a ejection state is shown according to an embodiment of the present application

[0031] Figure 13 A structure schematic view of a three-pronged special-shaped salt core pressing tool in a retraction state is shown according to an embodiment of the present application

[0032] Among them, Figures 1 to 13 The correspondence between the reference signs and the components in the middle is as follows:

[0033] 102 upper die, 104 lower die seat, 1041 first cylindrical hole, 1042 second cylindrical hole, 1043 inverted round table hole, 1044 third cylindrical hole, 106 lower die, 1061 lower die outer die, 1062 lower die inner core I, 1063 lower die inner core II, 1064 lower die inner core III, 108 ejection disc, 1081 through hole, 110 side cylinder core ejecting seat, 1101 inverted round table shaped counterbore, 112 side cylinder core, 1121 counterbore, 1122 conical surface, 1123 outer cylindrical surface, 114 ejection rod, 116 salt core finished product, 118 salt core filling cavity. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] The following is combined Figures 1 to 13 A three-pronged irregular salt core pressing tool according to an embodiment of the present utility model will be described in detail.

[0037] like Figures 1 to 13 As shown, a three-pronged irregular salt core pressing fixture according to an embodiment of the present invention includes: an upper die 102, a lower die base 104, a lower die 106, an ejector plate 108, a side cylinder ejector seat 110, a side cylinder ejector core 112, an ejector rod 114, etc. The upper die 102 is fixedly installed on the pressing mechanism of a four-column bidirectional press and moves up and down under its drive. The lower die base 104 is fixedly installed on the worktable of the four-column bidirectional press. The interior of the lower die base 104 is provided with a first cylindrical hole 1041, a second cylindrical hole 1042, a truncated cone hole 1043, and a third cylindrical hole 1044 from top to bottom, which are interconnected and penetrate the lower die base 104. Figure 4 As shown. The lower mold 106 is placed in the first cylindrical hole 1041 of the lower mold base 104. The lower mold 106 includes a lower outer mold 1061, a lower inner core I 1062, a lower inner core II 1063, and a lower inner core III 1064 that fit together, forming a three-pronged irregular salt core structure cavity with the upper mold 102. The ejector plate 108 is placed inside the lower mold base 104. The outer surface of the ejector plate 108 matches the inner surface of the second cylindrical hole 1042 and the inverted frustum hole 1043. The interior of the ejector plate 108 is provided with a through hole 1081 that is narrow at the top and wide at the bottom, as shown. Figure 5 As shown. The side cylinder ejector seat 110 is installed on the upper pressing mechanism of the four-column bidirectional press and is located below the lower die holder 104. The top surface of the side cylinder ejector seat 110 has an inverted frustum-shaped countersunk hole 1101 that is wider at the top and narrower at the bottom, as shown. Figure 7 As shown. The side cylinder top core 112 is placed on the side cylinder top ejector seat 110 and inserted into the through hole 1081 of the ejector plate 108. The bottom surface of the side cylinder top core 112 is provided with a countersunk hole 1121, as shown. Figure 6As shown, the top surface of the side cylinder top core 112 is connected with the lower mold inner core III 1064 at the bottom fork surface of the three-pronged special-shaped salt core structure cavity, driving the lower mold inner core III 1064 to move synchronously. The ejector rod 114 is fixedly installed on the ejector mechanism of the four-column double-action press and moves up and down under the driving of the four-column double-action press. The ejector rod 114 penetrates from the inside of the side cylinder ejector seat 110 and is inserted into the counterbore 1121 of the side cylinder top core 112 to drive the side cylinder top core 112 to move up and down. The three-pronged special-shaped salt core pressing tool has a simple and reliable structure and can realize high-quality pressing of the three-pronged special-shaped salt core without the need for a guide column for guiding. During the upward movement of the side cylinder ejector seat 110, the side cylinder top core 112 and the lower mold inner core III 1064 are first driven to move upward, the shorter branches at the bottom are first pressed, and the upper mold can realize up-down pressing. Then, the side cylinder top core 112 contacts and extrudes the ejector plate 108 upward, the ejector plate 108 extrudes the lower mold inner core I 1062 and the lower mold inner core II 1063, and the entire bottom surface of the salt core is evenly pressed, so that the density distribution of the three-pronged special-shaped salt core is more uniform, and a higher strength can be formed under the application of a smaller external force.

[0038] Further, as shown in Figure 3 , Figure 6 and Figure 7 , the bottom outer peripheral surface of the side cylinder top core 112 is a conical surface 1122 that is wide at the top and narrow at the bottom and matches the inner surface of the inverted circular truncated hole 1101 of the side cylinder ejector seat 110. The upper outer circular surface 1123 of the side cylinder top core 112 matches the third cylindrical hole 1044 of the lower mold seat 104. Thus, the relative position of the side cylinder top core 112 is limited, the centration of the side cylinder top core 112 is guaranteed, and the position of the side cylinder top core 112 basically does not deviate, further guaranteeing the salt core pressing effect.

[0039] Further, as shown in Figure 3 and Figure 5 , the outer diameter of the ejector plate 108 is smaller than the inner diameter of the lower mold outer mold 1061 and larger than the bottom surface spacing of the lower mold inner core I 1062 and the lower mold inner core II 1063. The top surface of the ejector plate 108 is flush with the bottom surface of the first cylindrical hole 1041 of the lower mold seat 104, and the bottom outer peripheral surface of the ejector plate 108 is a conical surface 1122 that is wide at the top and narrow at the bottom and matches the inner surface of the inverted circular truncated hole 1043 of the lower mold seat 104. Thus, the relative position of the ejector plate 108 is limited, the centration of the ejector plate 108 is guaranteed, and the outer diameter of the ejector plate 108 is reasonably designed, which guarantees the pressing effect and realizes the ejecting and demolding effect.

[0040] Further, as shown in Figure 3 , the central axes of the lower mold seat 104, the lower mold outer mold 1061, the side cylinder ejector seat 110, and the ejector rod 114 coincide. Thus, the pressing process is more reliable, and the pressing effect is further guaranteed.

[0041] The working process of the three-pronged special-shaped salt core pressing tooling is as follows:

[0042] As shown in Figure 8 and Figure 9 , the side cylinder ejection seat 110 is driven by the upper pressing mechanism of the four-column double-action press to move to a specified position; the side cylinder core 112 and the lower mold inner core III 1064 move to the specified position along with the side cylinder ejection seat 110; the lower mold outer mold 1061, the lower mold inner core I 1062, the lower mold inner core II 1063, and the lower mold inner core III 1064 form a salt core filler cavity 118; the filler is filled in the entire salt core cavity by using the falling-in method and scraping flat mode. As shown in Figure 10 and Figure 11 , the lower pressing mechanism of the four-column double-action press drives the upper mold 102 to move downward to the mold closing position, at the same time, the side cylinder ejection seat 110 is driven by the upper pressing mechanism of the four-column double-action press to drive the side cylinder core 112 and the lower mold inner core III 1064 to move upward to press the shorter prong at the bottom first, and cooperate with the upper mold to realize up-down pressing, then the side cylinder core 112 contacts and extrudes the ejection disc 108 upward, the ejection disc 108 extrudes the lower mold inner core I 1062 and the lower mold inner core II 1063 to uniformly press the entire bottom surface of the salt core, and in the salt core product 116 cavity state, the pressure is maintained for 2 seconds to ensure uniform stress. As shown in Figure 12 , after the pressure maintaining is completed, the lower pressing mechanism of the four-column double-action press drives the upper mold 102 to retreat to the reset position, the position of the side cylinder ejection seat 110 remains unchanged, the ejecting mechanism of the four-column double-action press drives the ejecting rod 114 to move upward, after the upper end surface of the ejecting rod 114 contacts the bottom surface of the counterbore 1121 of the side cylinder core 112, the side cylinder core 112, the ejection disc 108, the lower mold inner core I 1062, the lower mold inner core II 1063, and the lower mold inner core III 1064 continue to move upward to the specified position to eject the salt core product 116, and then the salt core product 116 is taken out. As shown in Figure 13 , the ejecting mechanism of the four-column double-action press drives the ejecting rod 114 to retreat to the reset position, the upper pressing mechanism of the four-column double-action press drives the side cylinder ejection seat 110 to retreat to the reset position, and the side cylinder core 112, the ejection disc 108, the lower mold inner core I 1062, the lower mold inner core II 1063, and the lower mold inner core III 1064 retreat to the reset position by gravity. Such a cycle realizes continuous production.

[0043] In the present application, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "a plurality of" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and other terms should be broadly understood, for example, "connecting" can be fixed connection, can also be detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0045] In the description of the present application, the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tri-pronged heteromorphic salt core pressing tooling characterized by, The utility model relates to a three-pronged special-shaped salt core pressing tool, which comprises the following parts: An upper die fixedly installed on the lower pressing mechanism of a four-column two-way press, a lower die seat fixedly installed on the workbench of the four-column two-way press, a first cylindrical hole, a second cylindrical hole, an inverted circular platform hole and a third cylindrical hole sequentially arranged inside the lower die seat from top to bottom and penetrating through the lower die seat, a lower die arranged in the first cylindrical hole of the lower die seat, the lower die comprising a lower die outer die, a lower die inner core I, a lower die inner core II and a lower die inner core III arranged in matching, and forming a three-pronged special-shaped salt core structure cavity with the upper die, an ejection disc arranged inside the lower die seat, the outer surface of the ejection disc matched with the inner surface of the second cylindrical hole and the inverted circular platform hole, and a through hole with a narrow upper section and a wide lower section arranged inside the ejection disc, a side cylinder ejection seat installed on the upper pressing mechanism of the four-column two-way press and below the lower die seat, an inverted circular platform hole with a wide upper section and a narrow lower section arranged on the top surface of the side cylinder ejection seat, a side cylinder ejection core arranged on the side cylinder ejection seat and inserted into the through hole of the ejection disc, a sink hole arranged on the bottom surface of the side cylinder ejection core, and the top surface of the side cylinder ejection core connected with the fork-shaped bottom surface of the lower die inner core III at the bottom of the three-pronged special-shaped salt core structure cavity, and an ejection rod fixedly installed on the ejection mechanism of the four-column two-way press, the ejection rod penetrating through the inside of the side cylinder ejection seat and inserted into the sink hole of the side cylinder ejection core.

2. The three-pronged special-shaped salt core pressing tool according to claim 1, wherein the bottom outer circumferential surface of the side cylinder ejection core is a conical surface with a wide upper section and a narrow lower section, and matched with the inner surface of the inverted circular platform hole of the side cylinder ejection seat.

3. The three-pronged special-shaped salt core pressing tool according to claim 2, wherein the upper outer circumferential surface of the side cylinder ejection core is matched with the third cylindrical hole of the lower die seat.

4. The three-pronged special-shaped salt core pressing tool according to claim 1, wherein the outer diameter of the ejection disc is smaller than the inner diameter of the lower die outer die and larger than the distance between the bottom surfaces of the lower die inner core I and the lower die inner core II.

5. The three-pronged special-shaped salt core pressing tool according to claim 1, wherein the top surface of the ejection disc is flush with the bottom surface of the first cylindrical hole of the lower die seat, and the bottom outer circumferential surface of the ejection disc is a conical surface with a wide upper section and a narrow lower section, and matched with the inner surface of the inverted circular platform hole of the lower die seat.

6. The three-pronged special-shaped salt core pressing tool according to claim 1, wherein the central axes of the lower die seat, the lower die outer die, the side cylinder ejection seat and the ejection rod coincide.

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