CN217704557U

CN217704557U - Be applied to fashioned type piece of double-end external screw thread and screw out mould

Info

Publication number: CN217704557U
Application number: CN202221021367.8U
Authority: CN
Inventors: 杨海锋
Original assignee: Kunshan Minxu Precision Mould Technology Co ltd
Current assignee: Kunshan Minxu Precision Mould Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-11-01
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a be applied to fashioned type piece of double-end external screw thread and screw out mould, including the die holder, the lower bolster, lower mould benevolence, horizontal semi-circular ejector pad, go up mould benevolence, cope match-plate pattern and upper cover plate, and guide pillar guide pin bushing subassembly, thimble assembly, be used for the shaping about both ends external screw thread go up screw thread piece and lower screw thread piece, automatic screw out subassembly, go up mould benevolence, the semi-circular ejector pad of both sides level butt joint and the telescopic die cavity of treating injection moulding are constituteed to the lower mould benevolence, and go up screw thread piece, lower screw thread piece inner wall curved surface constitutes the upper end thread type cavity structure of sleeve product respectively, lower extreme thread type cavity structure, automatic screw out subassembly is including linking firmly the frame in the die holder outside, the transmission motor, the transition gear, lead screw swivel nut subassembly, this mould utilizes automatic screw out subassembly to accomplish the external screw thread structure drawing of patterns of lower extreme with the product, adopt lead screw swivel nut subassembly to accomplish the screw drawing of patterns, the product drawing of patterns, guarantee the completeness of thread structure, the shaping quality and the production efficiency of sleeve part are improved.

Description

Be applied to fashioned type piece of double-end external screw thread and unscrew mould

Technical Field

The utility model relates to the technical field of mold, concretely relates to be applied to fashioned type piece back-out mould of double-end external screw thread.

Background

In the existing sleeve part, referring to fig. 1 and fig. 2 of the attached drawings of the specification, threads with opposite rotation directions are arranged on the outer walls of two ends of a sleeve, under the technical requirement of ensuring the product forming quality and the integrity of a thread structure, a complete thread block structure is needed to assist in forming a cavity outer curved surface of the thread structure, so after demolding, the thread block needs to be matched with mold opening action to rotate at a constant speed to perform demolding, and the thread blocks at the upper end and the lower end need to be opened simultaneously, so that a mold needs to be specially designed to improve the forming quality and the production efficiency of the sleeve part.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose: in view of the technical requirements in the background art, a mold block unscrewing mold applied to double-end external thread forming is designed so as to improve the forming quality and the production efficiency of the sleeve part.

The technical scheme adopted for solving the problems is as follows:

a mould block screwing-out mould applied to double-end external thread forming comprises a lower mould base, a lower mould plate, a lower mould core, a horizontal semicircular push block, an upper mould core, an upper mould plate, an upper cover plate, a guide pillar and guide sleeve assembly, an ejector pin assembly, an upper thread mould block, a lower thread mould block and an automatic screwing-out thread assembly, wherein the upper thread mould block and the lower thread mould block are used for forming external threads at the upper end and the lower end,

the lower die base, the lower die plate, the upper die core, the upper die plate and the upper cover plate are all matched by a guide pillar and guide sleeve assembly arranged at four corners in a penetrating and sleeving manner, the lower die core is fixedly connected with the upper end surface of the lower die plate, the upper die core is fixedly connected with the lower end surface of the upper die plate, the upper die core, the semicircular push block horizontally butted at two sides and the lower die core form a cavity of a sleeve to be injection molded, and the inner wall curved surfaces of the upper thread type block and the lower thread type block respectively form an upper end thread type cavity structure and a lower end thread type cavity structure of a sleeve product,

the upper thread block and the lower thread block are disc-shaped, the outer walls of the upper thread block and the lower thread block are provided with teeth with the same parameters, the upper thread block is connected with the upper template in a positioning way, only the rotational freedom degree of the upper thread block relative to the vertical direction of the upper template is reserved, the lower thread block is connected with the lower template in a positioning way, only the rotational freedom degree of the lower thread block relative to the vertical direction of the lower template is reserved,

automatic screw thread subassembly of unscrewing includes frame, drive motor, the transition gear that links firmly in the die holder outside, is used for the screw rod swivel nut subassembly of the screw thread play action about the lifting upper thread type piece and the control, screw rod swivel nut subassembly includes vertical lead screw that links firmly at lower die base board up end, with lead screw spiro union complex lifting swivel nut, the tooth that the lifting swivel nut corresponds upper thread type piece, lower screw thread type piece outer wall is provided with the screw-out gear, including upper screw-out gear and lower screw-out gear, upper screw-out gear and the tooth meshing transmission of upper thread type piece, upper screw-out gear lower extreme is provided with the lifting shaft shoulder, the tooth meshing transmission of lower screw-out gear and lower screw thread type piece, the screw-out gear outside still with the transition gear meshing transmission down, transition gear and drive motor's the epaxial driving gear meshing live transmission power.

Furthermore, a runner is arranged in the upper die core and is communicated with the injection molding port to obtain injection molding raw materials to enter the die cavity.

Furthermore, the semicircular push blocks horizontally butted at two sides are driven by the push cylinder to push and horizontally slide and are matched with the slide rail arranged on the lower template to realize accurate linear sliding.

Furthermore, the tooth width of the lower screwing-out gear is larger than the ejection height of an injection molded sleeve product after the sleeve product is ejected out of a mold.

Furthermore, the upper end of the screw rod is in sliding fit with a positioning seat arranged on the upper template in a penetrating and sleeving manner.

Furthermore, the transmission motor is fixedly connected to the rack, and the transition gear is matched with the transmission shaft key groove.

The utility model has the advantages that:

this be applied to fashioned type piece of double-end external screw thread and unscrew mould utilizes automatic screw thread subassembly to the outer thread structure drawing of patterns of lower extreme on with the product to adopt lead screw swivel nut subassembly to accomplish the helicitic texture drawing of patterns and the product drawing of patterns double action, guaranteed the integrality of helicitic texture, improved the shaping quality and the production efficiency of this sleeve part.

Drawings

FIG. 1 is a schematic view of a sleeve product;

FIG. 2 is a cross-sectional view of a sleeve product;

FIG. 3 is a schematic structural view of the block unscrewing mold applied to the double-ended external thread molding in the embodiment;

the injection molding machine comprises a sleeve 1, an upper end thread 2, a lower end thread 3, an ejector pin 4, a push plate 5, a lower mold plate 6, a lower thread block 7, a guide pillar and guide sleeve assembly 8, a limit pin of a semicircular push block 9, a semicircular push block 10, a push cylinder 11, an upper thread block 12, a shunt 13, an injection molding port 14, a screw rod 15, an upper mold plate 16, a positioning seat 17, an upper screwing-out gear 18, a lifting shaft shoulder 19, a lifting screw sleeve 20, a transition gear 21, a driving gear 22, a driving gear 23, a transmission motor 24, a transmission shaft 25, a lower screwing-out gear 25 and an upper mold core 26.

Detailed Description

The technical solution of the present invention will be described in detail and fully with reference to the accompanying drawings.

Referring to fig. 1-3, the present embodiment provides a block unscrewing mold for forming a double-ended external thread, including a lower mold base, a lower mold plate 6, a lower mold core (not shown), a horizontal semicircular push block 10, an upper mold core 26, an upper mold plate 16, an upper cover plate, a guide pillar and guide sleeve assembly 8, an ejector pin assembly, an upper thread block 12 and a lower thread block 7 for forming external threads at upper and lower ends, and an automatic screw-out assembly, wherein a runner 13 is disposed in the upper mold core 26 and is communicated with an injection port 14 to obtain an injection molding material entering a cavity.

The lower die holder, the lower die plate 6, the upper die kernel 26, the upper die plate 16 and the upper cover plate are matched with each other in a penetrating and sleeving manner through guide pillar and guide sleeve assemblies 8 arranged at four corners, the lower die kernel is fixedly connected to the upper end surface of the lower die plate 6, the upper die kernel 26 is fixedly connected to the lower end surface of the upper die plate 16, the upper die kernel 26, the semicircular push blocks 10 horizontally butted at two sides and the lower die kernel form a cavity of a sleeve 1 to be subjected to injection molding, and inner wall curved surfaces of the upper thread block 12 and the lower thread block 7 respectively form an upper end thread 2 cavity structure and a lower end thread 3 cavity structure of a sleeve 1 product.

Referring to fig. 3, the upper thread-shaped block 12 and the lower thread-shaped block 7 are disc-shaped, the outer walls of the upper thread-shaped block 12 and the lower thread-shaped block 7 are provided with teeth with the same parameters, the upper thread-shaped block 12 is connected with the upper template 16 in a positioning manner, only the rotational freedom degree of the upper thread-shaped block 12 relative to the vertical direction of the upper template 16 is maintained, the lower thread-shaped block 7 is connected with the lower template 6 in a positioning manner, and only the rotational freedom degree of the lower thread-shaped block 7 relative to the vertical direction of the lower template 6 is maintained.

The teeth of the upper thread-shaped block 12 and the lower thread-shaped block 7 are engaged with the automatic screwing-out thread component to obtain the transmission force of screwing in, screwing out and lifting out the die.

The automatic screw-out threaded component comprises a rack fixedly connected to the outer side of a lower die holder, a transmission motor 23, a transition gear 21, a screw rod thread sleeve component used for lifting an upper thread block 12 and controlling the screwing-out action of an upper end thread 3, the transmission motor 23 is fixedly connected to the rack, the transition gear 21 is matched with a transmission shaft 24 through a key groove, the screw rod thread sleeve component comprises a screw rod 15 vertically fixedly connected to the upper end face of the lower die holder plate and a lifting thread sleeve 20 in threaded fit with the screw rod 15, the lifting thread sleeve 20 corresponds to the upper thread block 12 and the outer wall of a lower thread block 7 and is provided with a screw-out gear, the screw rod thread sleeve component comprises an upper screw-out gear 18 and a lower screw-out gear 25, the upper screw-out gear 18 is in meshed transmission with the teeth of the upper thread block 12, the lower end of the upper screw-out gear 18 is provided with a lifting shaft shoulder 19 and is used for supporting the lower end face of the upper thread block 12, so that the lifting action generated when the screw rod thread sleeve 20 is screwed out with the screw rod 15 is converted into lifting action on the upper thread block 12 and is also used for mold opening action, the lower screw-out gear 25 is in threaded transmission, the transition gear 25 is meshed with the lower screw-out gear 21, the driving gear 21, and the driving gear 21 is meshed with the lower screw-out gear 21, and the driving gear is further used for ensuring the width of the driving gear of the lower screw-out gear 21, and the driving gear is stably meshed with the driving gear.

In a further embodiment, the pushing cylinder 11 drives the semicircular push block 10 with two horizontally butted sides to horizontally slide, and the semicircular push block is matched with a slide rail arranged on the lower template 6 to realize accurate linear sliding.

The further implementation scheme is that the upper end of the screw rod 15 is in sliding fit with a positioning seat 17 arranged on the upper template 16 in a penetrating manner, so that the screw rod 15 is positioned stably in the vertical direction.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes, modifications, substitutions and alterations can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a be applied to fashioned type piece of double-end external screw thread and screw out mould, includes die holder, lower bolster, lower mould benevolence, the semicircular ejector pad of level, upper die benevolence, cope match-plate pattern and upper cover plate to and guide pillar guide pin bushing subassembly, thimble assembly, its characterized in that: also comprises an upper thread type block and a lower thread type block which are used for forming external threads at the upper end and the lower end, and an automatic screw-out component,

automatic screw thread subassembly of unscrewing includes frame, drive motor, the transition gear that links firmly in the die holder outside, is used for the screw rod swivel nut subassembly of the screw thread action of screw thread type piece and control about the lifting, the screw rod swivel nut subassembly include vertical lead screw, with lead screw spiro union complex lifting swivel nut that links firmly at lower die base board up end, the tooth that the lifting swivel nut corresponds screw thread type piece, lower screw thread type piece outer wall is provided with the gear of unscrewing, including last gear and lower screw thread type wheel, go up the tooth meshing transmission of screw thread type piece and last screw thread type piece, upward screw thread out gear lower extreme is provided with the lifting shoulder, the tooth meshing transmission of screw thread type piece and lower screw thread type piece down.

2. The type block unscrewing die for double-end external thread forming as claimed in claim 1, wherein: the lower die base, the lower die plate, the upper die core, the upper die plate and the upper cover plate are matched with each other in a penetrating and sleeving manner through guide pillar and guide sleeve assemblies arranged at four corners, the lower die core is fixedly connected to the upper end face of the lower die plate, and the upper die core is fixedly connected to the lower end face of the upper die plate.

3. The block unscrewing die for double-ended external thread forming as claimed in claim 1, wherein: the upper mold core, the semicircular push block horizontally butted at two sides and the lower mold core form a cavity of the sleeve to be injection molded, and the inner wall curved surfaces of the upper thread type block and the lower thread type block respectively form an upper end thread type cavity structure and a lower end thread type cavity structure of the sleeve product.

4. The block unscrewing die for double-ended external thread forming as claimed in claim 1, wherein: the outer side of the lower screwing-out gear is also in meshed transmission with a transition gear, and the transition gear is in meshed movable transmission force with a driving gear on a main shaft of a transmission motor.

5. The type block unscrewing die for double-end external thread forming as claimed in claim 1, wherein: and a shunt passage is arranged in the upper die core and is communicated with the injection molding port.

6. The type block unscrewing die for double-end external thread forming as claimed in claim 1, wherein: the semicircular push blocks with two horizontally butted sides are driven by the push cylinder to push and horizontally slide, and are matched with the slide rail arranged on the lower template to realize accurate linear sliding.

7. The type block unscrewing die for double-end external thread forming as claimed in claim 1, wherein: the tooth width of the lower screwing-out gear is larger than the ejection height of an injection molded sleeve product after the sleeve product is demoulded.

8. The block unscrewing die for double-ended external thread forming as claimed in claim 1, wherein: the upper end of the screw rod is in sliding fit with a positioning seat arranged on the upper template in a penetrating and sleeving manner.

9. The block unscrewing die for double-ended external thread forming as claimed in claim 1, wherein: the transmission motor is fixedly connected to the rack, and the transition gear is matched with the transmission shaft key groove.