Guide sleeve
By designing annular grooves and buffer parts in the guide sleeve, the impact force is absorbed, and the problem of damage to molded parts is solved, which effectively absorbs impact force and convenient installation of guide sleeves is achieved.
Patent Information
- Application Number
- CN202420261132.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-02-02
AI Technical Summary
In molds, the thimble is likely to cause the mold to vibrate when the mold is opened, which may cause cracks in fragile molded parts, and the existing guide sleeves cannot effectively buffer the impact force.
A guide sleeve is designed, with an annular groove on the bottom surface, which contains a buffer piece composed of an annular airbag and a sleeve ring. It absorbs impact force through a spring and a telescopic rod, and is fixed to the mold by bolts to avoid the impact force being transmitted into the mold.
Effectively buffer and absorb impact forces, prevent damage to the molded parts in the mold, and facilitate disassembly and assembly and fixation of the guide sleeve.
Smart Images
Figure CN222245671U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molds, in particular to a guide sleeve. Background Art
[0002] Ejector pins, after the product is cooled and solidified in the mold, it needs to be pushed out of the mold reliably. The mechanism that completes this function is called an ejection system. Ejector pin ejection is a structural form of the ejection system. Ejector pins can also be called ejector pins, push rods, insert pins, center pins, support pins, etc.
[0003] Since the ejector pins in the mold are relatively thin, in order to prevent the ejector pins from breaking when the mold is opened and the molded part is ejected from the mold, a guide sleeve is usually connected to the outside of the ejector pin to protect the ejector pin. However, the ejector pin is fixed on the push plate. When the mold is opened, the push plate will hit the bottom of the guide sleeve, causing the entire mold to vibrate, which can easily lead to cracks in some of the more fragile molded parts in the mold. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and provides a guide sleeve.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a guide sleeve, including a guide sleeve body, the bottom surface of the guide sleeve body is axially opened with an annular groove, a buffer is arranged in the annular groove, and a limit ring is arranged at the end of the buffer.
[0006] As a further description of the above technical solution: a plurality of countersunk holes equidistantly distributed are axially opened on the bottom surface of the end of the guide sleeve body, the guide sleeve body is fixed to the mold by bolts, and one bolt is sleeved in each of the countersunk holes.
[0007] As a further description of the above technical solution: the buffer component includes a ring concentrically fixed on the top surface of the limiting ring, the ring is movably connected in the annular groove, an annular airbag is provided in the annular groove, the annular airbag is located on the top surface of the ring, the end surface of the annular airbag axially penetrates a plurality of equidistant annularly distributed holes, and each of the holes is not connected to the annular airbag.
[0008] As a further description of the above technical solution: a plurality of equally spaced annular telescopic rods are axially fixed to the top surface of the collar, the ends of the telescopic rods are axially fixed to the top wall of the annular groove, one telescopic rod is sleeved in each sleeve hole, a spring is provided in each sleeve hole, and one spring is sleeved on the outer edge of each telescopic rod.
[0009] As a further description of the above technical solution: two radially symmetrical sliding grooves are axially opened in the annular groove, a sliding block is slidably connected in each of the sliding grooves, and the two sliding blocks are respectively fixed on both sides of the outer edge of the ring.
[0010] As a further description of the above technical solution: the end surface area of the annular airbag is equal to the end surface area of the collar, and the end surface area of the collar is equal to the end surface area of the annular groove.
[0011] The utility model has the following beneficial effects:
[0012] Compared with the prior art, the guide sleeve has an annular groove formed on the bottom surface of the guide sleeve body, and a buffer composed of an annular airbag and a sleeve ring is movably connected in the annular groove, and a plurality of sleeve holes which are not connected to the inside of the annular airbag are axially formed on the annular airbag, and a telescopic rod with a spring on the outside is arranged in each sleeve hole, and the two ends of the telescopic rod are respectively fixed on the top surfaces of the annular groove and the sleeve ring. When the mold is opened, the impact force of the push plate hitting the guide sleeve body plays a role of buffering and absorption, avoiding the impact force from being transmitted to the mold and causing damage to the more fragile molded parts in the mold, while the guide sleeve body is connected to the mold by bolts, which facilitates the disassembly and assembly of the entire guide sleeve body. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a three-dimensional diagram of the overall structure of a guide sleeve proposed by the utility model;
[0014] Figure 2 This is a main cross-sectional view of the overall structure of a guide sleeve proposed by the utility model;
[0015] Figure 3 A guide sleeve proposed by the utility model Figure 2 A magnified view of the structure at center.
[0016] Legend:
[0017] 1. Guide sleeve body; 2. Countersunk hole; 3. Ring; 4. Limiting ring; 5. Annular groove; 6. Slide groove; 7. Sliding block; 8. Annular airbag; 9. Hole; 10. Spring; 11. Telescopic rod. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Reference Figures 1 to 3 The utility model provides a guide sleeve: comprising a guide sleeve body 1, a plurality of countersunk holes 2 equidistantly distributed are axially provided on the bottom surface of the end of the guide sleeve body 1, the guide sleeve body 1 is fixed to the mold by bolts, and each countersunk hole 2 is sleeved with a bolt, an annular groove 5 is axially provided on the bottom surface of the guide sleeve body 1, a buffer is provided in the annular groove 5, a limiting ring 4 is provided at the end of the buffer, the buffer comprises a collar 3 concentrically fixed on the top surface of the limiting ring 4, the collar 3 is movably connected in the annular groove 5, two radially symmetrical slide grooves 6 are axially provided in the annular groove 5, a slider 7 is slidably connected in each slide groove 6, and the two sliders 7 are respectively fixed to the outer edge of the collar 3 On both sides, annular airbags 8 are provided in the annular groove 5, the end surface area of the annular airbags 8 is equal to the end surface area of the ring 3, the end surface area of the ring 3 is equal to the end surface area of the annular groove 5, the annular airbags 8 are located on the top surface of the ring 3, and the end surface of the annular airbags 8 axially penetrates a plurality of equidistant annularly distributed sleeve holes 9, each sleeve hole 9 is not connected to the annular airbags 8, and a plurality of equidistant annularly distributed telescopic rods 11 are axially fixed on the top surface of the ring 3, and the ends of the telescopic rods 11 are axially fixed to the top wall of the annular groove 5, a telescopic rod 11 is sleeved in each sleeve hole 9, a spring 10 is provided in each sleeve hole 9, and a spring 10 is sleeved on the outer edge of each telescopic rod 11.
[0020] An annular groove 5 is provided on the bottom surface of the guide sleeve body 1, and a buffer composed of an annular airbag 8 and a collar 3 is movably connected in the annular groove 5, and a plurality of sleeve holes 9 which are not connected to the inside of the annular airbag 8 are axially provided on the annular airbag 8, and a telescopic rod 11 with a spring 10 on the outside is provided in each sleeve hole 9, and the two ends of the telescopic rod 11 are respectively fixed to the top surfaces of the annular groove 5 and the collar 3. When the mold is opened, the impact force of the push plate hitting the guide sleeve body 1 plays a role of buffering and absorbing, so as to avoid the impact force from being transmitted to the mold and causing damage to the relatively fragile molded parts in the mold. The guide sleeve body 1 is connected to the mold by bolts, which makes it easy to disassemble and assemble the entire guide sleeve body 1.
[0021] Working principle: During use, when the mold is opened, the push plate will first hit the limit ring 4. After the limit ring 4 is subjected to the impact force, it will rise axially in the annular groove 5. At the same time, the spring 10 and the telescopic rod 11 are compressed, and the spring 10 will initially buffer and absorb the impact force. After the annular airbag 8 absorbs the spring 10, the remaining impact force will be buffered and absorbed, so that the ring 3 axially compresses the airbag, and the annular airbag 8 will finally buffer and absorb the impact force.
[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A guide sleeve, comprising a guide sleeve body (1), characterized in that: The bottom surface of the guide sleeve body (1) is axially provided with an annular groove (5), a buffer is provided in the annular groove (5), and a limiting ring (4) is provided at the end of the buffer; The buffer component comprises a collar (3) concentrically fixed to the top surface of the limiting ring (4); the collar (3) is movably connected in the annular groove (5); an annular airbag (8) is arranged in the annular groove (5); the annular airbag (8) is located on the top surface of the collar (3); the end surface of the annular airbag (8) axially penetrates a plurality of equidistantly annularly distributed collar holes (9); and each of the collar holes (9) is not connected to the annular airbag (8).
2. A guide sleeve according to claim 1, characterized in that: A plurality of countersunk holes (2) distributed at equal distances are axially provided on the bottom surface of the end of the guide sleeve body (1); the guide sleeve body (1) is fixed to the mold by bolts, and one of the bolts is sleeved into each of the countersunk holes (2).
3. A guide sleeve according to claim 1, characterized in that: A plurality of telescopic rods (11) equidistantly distributed in an annular manner are axially fixed to the top surface of the collar (3); the ends of the telescopic rods (11) are axially fixed to the top wall of the annular groove (5); each of the sleeve holes (9) is sleeved with one of the telescopic rods (11); each of the sleeve holes (9) is provided with a spring (10); and the outer edge of each of the telescopic rods (11) is sleeved with one of the springs (10).
4. A guide sleeve according to claim 1, characterized in that: Two radially symmetrical sliding grooves (6) are axially provided in the annular groove (5), a sliding block (7) is slidably connected in each of the sliding grooves (6), and the two sliding blocks (7) are respectively fixed on both sides of the outer edge of the collar (3).
5. A guide sleeve according to claim 1, characterized in that: The end surface area of the annular airbag (8) is equal to the end surface area of the collar (3), and the end surface area of the collar (3) is equal to the end surface area of the annular groove (5).