Rifle type die for automobile connecting rod

Abstract

The utility model relates to the technical field of dies, and particularly discloses a rifle type die for an automobile connecting rod. The mold comprises a front mold assembly and a rear mold assembly, and the rear mold assembly comprises a rear mold plate, a rear mold core, a first fixing plate, a second fixing plate and a third fixing plate; a side face core pulling assembly is arranged on the rear mold plate and comprises a first core pulling structure and a second core pulling structure which are arranged in a mirror image mode, and each of the first core pulling structure and the second core pulling structure comprises a core pulling sliding block, a guiding structure and a limiting structure. A rifle type core-pulling assembly is arranged in the front mold assembly and the rear mold assembly, each rifle type core-pulling assembly comprises a rifle rod with a threaded rod body, a first sleeve, a first gear structure and a second gear structure, and the mold is simple in structure, accurate and reliable in mechanical demolding, high in threaded demolding speed, high in production efficiency and low in production cost.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a rifle-type mold. Background Art

[0002] Molds are important tools used for molding processing in industrial production and are widely used in many fields such as plastic products, metal products, automobiles, and casting. The development background of molds is closely related to the needs of modern manufacturing. With the rapid development of the plastics, rubber, automobile and electronics industries, mold manufacturing technology has also been significantly improved. Among them, threaded products are widely used in the automotive industry, but the internal thread structure is complex and may require manual, electric or forced demolding. Manual demolding is inefficient, and electric-driven gear demolding is costly. Frequent use of forced demolding causes mold wear and shortens mold life. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a rifle-type mold for an automobile connecting rod, which has a simple structure, accurate and reliable mechanical demoulding, fast thread demoulding speed, high production efficiency and low production cost.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A rifle-type mold for an automobile connecting rod, characterized in that it comprises: a front mold assembly and a rear mold assembly, the rear mold assembly comprising a rear template, a rear mold core arranged on the rear template, and a first fixed plate, a second fixed plate and a third fixed plate arranged in sequence below the rear template; a side core pulling assembly is provided on the rear template, the side core pulling assembly comprises a first core pulling structure and a second core pulling structure arranged in a mirror-image manner, the first core pulling structure and the second core pulling structure both comprise a core pulling slider arranged on the rear template for forming the side structure of the product, a guide structure and a limiting structure cooperating with the core pulling slider; a rifle-type core pulling assembly is provided in the front mold assembly and the rear mold assembly, the rifle-type core pulling assembly comprises a rifle rod connected to the front mold assembly and passing through the front mold assembly and the rear mold assembly, a first sleeve screwed to the rifle rod, a first gear structure arranged on the outside of the first sleeve, and a second gear structure geared with the first gear structure for forming the internal thread of the product, the rod body of the rifle rod has a threaded structure.

[0006] According to some embodiments of the present invention, the rifle rod includes a first limit block located at the top end thereof and fixed on the front mold assembly, and a first limit rod and a second limit rod are provided on both sides of the first limit block to prevent the rifle rod from rotating, and a first limit groove and a second limit groove are provided on both sides of the first limit block to cooperate with the first limit rod and the second limit rod.

[0007] According to some embodiments of the present invention, the Rifle core pulling assembly further includes a first ball bearing structure connected to the first sleeve and arranged above the first gear structure, and a second ball bearing structure connected to the first sleeve and arranged below the first gear structure.

[0008] According to some embodiments of the present invention, a second limiting block is provided on the outer side of the first sleeve, and the second limiting block is used to limit and fix the first gear structure.

[0009] According to some embodiments of the present invention, the second gear structure includes a first forming part located at the top thereof for forming the internal thread of the product, a gear part located in the middle thereof and toothed with the first gear structure, a threaded part located at the bottom thereof for demolding, and a limiting base screwed onto the outside of the threaded part.

[0010] According to some embodiments of the present invention, the limiting base includes a third limiting groove located on its outside and a connecting block passing through the third limiting groove and connected to the second fixed plate, and the third fixed plate has a fourth limiting groove matching the third limiting groove.

[0011] According to some embodiments of the present invention, the rear mold core is provided with multiple groups of second forming parts for forming the bottom groove of the product, and the bottom surface of the rear mold core is provided with a second sleeve which is sleeved above the gear part and abuts against the bottom surface of the rear mold core.

[0012] According to some embodiments of the present invention, the guide structure includes a guide column arranged in the core-pulling slider and connected to the front mold assembly, and a guide block arranged on both sides of the core-pulling slider and connected to the rear mold plate. A core-pulling sliding groove is formed between the guide block and the rear mold plate, and the core-pulling slider slides in the core-pulling sliding groove to pull the core.

[0013] According to some embodiments of the present invention, the limiting structure includes a third limiting block arranged on the rear mold core, the third limiting block is provided with an oblique protrusion, and the bottom of the core-pulling slider has a fourth limiting groove that cooperates with the oblique protrusion.

[0014] According to some embodiments of the present invention, the mold opening stroke of the front mold assembly and the rear mold assembly is less than 170 mm.

[0015] The utility model has at least the following beneficial effects:

[0016] The side core pulling assembly forms the two sides of the cylinder respectively by mirroring the first core pulling structure and the second core pulling structure, so that the core pulling on both sides does not interfere with each other, the demoulding effect is good, and the consistency and balance of the core pulling are guaranteed; the rifle-type core pulling assembly realizes mechanized and automated demoulding, which can smoothly separate the product from the mold and reduce the risk of product damage. The engagement of the first gear structure and the second gear structure on the rifle rod can achieve efficient preparation of internal thread products and rapid demoulding of the internal thread. The entire mold structure is simple, the production efficiency is high, and the mold cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the automobile connecting rod product of the utility model;

[0018] Figure 2 This is a structural cross-section of an embodiment of the utility model Figure 1 ;

[0019] Figure 3 This is a structural cross-section of an embodiment of the utility model Figure 2 ;

[0020] Figure 4 This is a structural diagram of a side core pulling assembly and a rifle core pulling assembly according to an embodiment of the present invention;

[0021] Figure 5 This is a structural diagram of a rifle-type core-pulling assembly according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the side core pulling assembly of an embodiment of the utility model Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the structure of the side core pulling assembly of an embodiment of the utility model Figure 2 ;

[0024] Figure 8 This is a schematic structural diagram of a limiting structure according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0025] The following description of the present invention, with reference to the accompanying drawings, is provided to facilitate a more comprehensive understanding of the various embodiments of the present invention as defined in the claims and their equivalents. The description includes various specific details to assist understanding, but these details should be construed as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present invention.

[0026] In the description of the present invention, descriptions of directions, such as up, down, front, back, left, right, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0027] It will be understood that when one element (e.g., a first element) is “connected” to another element (e.g., a second element), the element may be directly connected to the other element or an intervening element (e.g., a third element) may be present between the element and the other element.

[0028] The embodiment of the utility model provides a rifle-type mold for an automobile connecting rod. Figure 1-2 As shown, it includes: a front mold assembly 101 and a rear mold assembly 102, the rear mold assembly 102 includes a rear template 103, a rear mold core 104 set on the rear template 103, and a first fixed plate 105, a second fixed plate 106 and a third fixed plate 107 sequentially arranged below the rear template 103; a side core pulling assembly 200 is provided on the rear template 103, and the side core pulling assembly 200 includes a first core pulling structure 201 and a second core pulling structure 202 set in mirror image, and the first core pulling structure 201 and the second core pulling structure 202 both include core pulling structures set on the rear template 103 for forming the side structure of the product A slider 210, a guide structure 220 and a limiting structure 230 that cooperate with the core-pulling slider 210; a rifle-type core-pulling assembly 300 is provided in the front mold assembly 101 and the rear mold assembly 102, and the rifle-type core-pulling assembly 300 includes a rifle rod 310 connected to the front mold assembly 101 and passing through the front mold assembly 101 and the rear mold assembly 102, a first sleeve 311 screwed to the rifle rod 310, a first gear structure 320 arranged on the outside of the first sleeve 311, and a second gear structure 330 that is gear-connected with the first gear structure 320 and is used to form an internal thread of a molded product, and the rod body of the rifle rod 310 has a threaded structure.

[0029] In this embodiment, there are two molding cavities between the front mold assembly 101 and the rear mold assembly 102. In actual production, the number of molding cavities can be set to multiple according to the positional relationship between the first gear structure 320 and the second gear structure 330 in the rifle core pulling assembly 300, such as Figure 1The automobile connecting rod product structure shown in the figure has a cylindrical structure on the outside of the product. The side core pulling assembly 200 is formed into two semicircles on both sides of the cylinder by mirroring the first core pulling structure 201 and the second core pulling structure 202, which is convenient for demoulding without interference. The core pulling slider 210 is demoulded on both sides under the guidance of the guide structure 220. At this time, the product still stays on the second gear structure 330. The core pulling slider 210 prevents the core pulling slider 210 from excessive stroke through the limiting structure 230. The mirrored core pulling slider 210 enables the core pulling mechanisms on both sides to move synchronously to ensure the consistency and balance of the core pulling; the upper end of the rifle rod 310 in the rifle-type core pulling assembly 300 is connected to the front mold assembly 101, and the lower part is installed downward from the front mold assembly 101 into the rear mold assembly 102, as shown specifically Figure 2 As shown, the rifle rod 310 is also affected by the structure and passes through the first core-pulling structure 201. The first core-pulling structure 201 is provided with a groove 211 with a preset horizontal distance to prevent the core-pulling slider 210 from interfering with the rifle rod 310 when the core-pulling slide is sliding. When the mold is opened, the rifle rod 310 is fixed on the front mold assembly 101 and does not move. When it is separated from the rear mold assembly 102, since the rod body has a threaded structure, the rifle rod 310 starts to drive the first sleeve 311 set on the outside and the first gear structure 320 set on the outside of the spiral first sleeve 311 to rotate synchronously in the opposite direction under the action of its own large lead thread. The first gear structure 320 drives the second gear structure 320 connected to its gear. The gear structure 330 rotates in the direction of the product spiral selection, and rotates and retreats during the rotation process until the product thread is disengaged and the product falls off automatically. Specifically, the first gear structure 320 can be a module 2 with 60 teeth, and the second gear structure 330 can be a combination of module 2 with 15 teeth, which is convenient for quick demoulding; when the mold is closed, the side core pulling assembly 200 and the rifle core pulling assembly 300 are reset by the action of the rifle rod 310. The mold can smoothly separate the product from the mold, reducing the risk of product damage. The mechanical automatic demoulding and thread removal speed are fast, which helps to shorten the injection cycle, improve production efficiency, and reduce labor and production costs.

[0030] In some embodiments, as Figure 2 、 4 As shown in Figures 5 and 6, the rifle lever 310 includes a first limiting block 312 located at the top end thereof and fixed on the front mold assembly 101. The first limiting block 312 is provided with a first limiting rod 313 and a second limiting rod 314 on both sides thereof for preventing the rifle lever 310 from rotating. The first limiting block 312 is provided with a first limiting groove 315 and a second limiting groove 316 on both sides thereof for cooperating with the first limiting rod 313 and the second limiting rod 314.

[0031] The rifle rod 310 is fixed to the front mold assembly 101 by a first limit block 312. The width of the first limit block 312 is greater than the rod body of the rifle rod 310, which limits the downward displacement of the rifle rod 310, making it convenient for the rifle rod 310 to be firmly connected to the front mold assembly 101. The cooperation between the first limit rod 313 and the second limit rod 314 and the first limit groove 315 and the second limit groove 316 can effectively limit the rotation of the rifle rod 310, making it convenient to maintain the stable rotation of the first sleeve 311.

[0032] In some embodiments, as Figure 2 、 4 As shown in , 5 , the Rifle core pulling assembly 300 further includes a first ball bearing structure 321 disposed above the first gear structure 320 and connected to the first sleeve 311 , and a second ball bearing structure 322 disposed below the first gear structure 320 and connected to the first sleeve 311 .

[0033] The first ball bearing structure 321 and the second ball bearing structure 322 replace sliding friction with rolling friction, which significantly reduces the friction between the first sleeve 311 and the first gear structure 320 when rotating in the mold, reduces wear, and ensures the stability and repeatability of the rifle rod 310 during the demolding process. Reducing friction and improving precision help improve production efficiency, make the demolding process smoother, and reduce production cycle time.

[0034] In some embodiments, as Figure 2 As shown, a second limiting block 323 is provided on the outer side of the first sleeve 311 , and the second limiting block 323 is used to limit and fix the first gear structure 320 .

[0035] The second limiting block 323 can effectively prevent the first gear structure 320 from slipping when the first sleeve 311 rotates. The second limiting block 323 can be a connecting structure such as a flat key, a wedge key, a pin, or an expansion sleeve.

[0036] In some embodiments, as Figure 3-5 As shown, the second gear structure 330 includes a first molding part 331 located at the top thereof for molding the internal thread of the product, a gear part 332 located in the middle thereof and toothed with the first gear structure 320, a threaded part 333 located at the bottom thereof for demolding, and a limiting base 334 screwed to the outside of the threaded part 333.

[0037] The gear portion 332 is gear-engaged with the first gear structure 320 and can rotate along with the first gear structure 320 during demoulding. When the gear portion 332 rotates, it drives the second gear structure 330 to rotate as a whole. The threaded portion 333 located at the lower part is screwed to the limiting base 334. Since the limiting base 334 is fixed on the rear mold assembly 102, when the threaded portion 333 rotates in the limiting base 334, it drives the second gear structure 330 to move downward, so that the internal thread structure of the first molding portion 331 used for molding the product is unscrewed and demoulded. There is a certain height difference between the gear portion 332 and the first gear structure 320, and downward displacement occurs during the rotation process. The setting of the limiting base 334 can limit the displacement of the second gear structure 330 to prevent excessive stroke.

[0038] Further, if Figure 3-5 As shown, the limiting base 334 includes a third limiting groove 336 located on its outer side and a connecting block 335 passing through the third limiting groove 336 and connected to the second fixing plate 106 , and the third fixing plate 107 has a fourth limiting groove matching the third limiting groove 336 .

[0039] The limiting base 334 is fixed to the second fixed plate 106 through the connecting block 335. When the threaded portion 333 of the second gear structure 330 moves downward, it can drive the limiting base 334 to rotate. The connecting block 335 moves relatively in the third limiting groove 336 until it abuts against the edge of the third limiting groove 336. As a result, the third limiting groove 336 limits the rotation distance of the limiting base 334, thereby limiting the downward movement distance of the threaded portion 333. The fourth limiting groove matches the third groove 336, which is convenient for the connecting block 335 to be installed without being restricted by the rotation position during installation, thereby facilitating the installation and placement of the connecting block 335.

[0040] Further, if Figure 5-7 As shown, the rear mold core 104 is provided with multiple groups of second molding parts 108 for molding the bottom groove of the product, and the bottom surface of the rear mold core 104 is provided with a second sleeve 109 which is sleeved above the gear part 332 and abuts against the bottom surface of the rear mold core 104.

[0041] Specifically, the groove is shaped like a square protrusion with a right angle on one side and an arc angle on the other side, which is convenient for demolding. The second sleeve 109 can position and limit the position between the gear part 332 and the rear mold core 104, so as to conveniently limit the position of the second molding part 108 on the rear mold core 104.

[0042] In some embodiments, as Figure 6As shown, the guide structure 220 includes a guide column 221 arranged in the core-pulling slider 210 and connected to the front mold assembly 101, and a guide block 222 arranged on both sides of the core-pulling slider 210 and connected to the rear mold plate 103. A core-pulling sliding groove is formed between the guide block 222 and the rear mold plate 103, and the core-pulling slider 210 slides in the core-pulling sliding groove to pull the core.

[0043] A core-pulling sliding groove is formed between the guide block 222 and the rear template 103. The front mold assembly 101 and the guide column 221 are connected together when the mold is opened. The core-pulling slider 210 is driven along the guide of the guide block 222 through an oblique setting so that the core-pulling slider 210 slides in the core-pulling sliding groove to pull the core. The shape of the core-pulling slider 210 can be T-shaped, dovetail-shaped, etc. The guide block 222 is set according to the shape of the core-pulling slider 210. The split sliding groove design is convenient for processing and maintenance.

[0044] In some embodiments, as Figure 7-8 As shown, the limiting structure 230 includes a third limiting block 231 provided on the rear mold core 104 , an oblique protrusion 232 is provided on the third limiting block 231 , and a fourth limiting groove 233 matching the oblique protrusion 232 is provided at the bottom of the core-pulling slider 210 .

[0045] The third limiting block 231 is embedded in the rear mold core 104, which is convenient for installation without affecting the demoulding of the core-pulling slider 210. The fourth limiting groove 233 matches the oblique protrusion 232. The oblique protrusion 232 provides a stopping point, limits the core-pulling stroke of the core-pulling slider 210, and prevents it from falling off.

[0046] In some embodiments, as Figure 1-2 As shown, the mold opening stroke of the front mold assembly 101 and the rear mold assembly 102 is less than 170 mm.

[0047] The mold opening stroke is less than 170mm to prevent the Fosun core pulling assembly 300 from detaching and scattering. The stroke limitation ensures that the molding can be restored when the mold is closed.

[0048] The terms and words used in the above description and claims are not limited to their literal meanings, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the present invention is provided for illustration only and is not intended to limit the present invention as defined in the appended claims and their equivalents.

Claims

1. A rifle-type mold for an automobile connecting rod, characterized in that: include: A front mold assembly (101) and a rear mold assembly (102), wherein the rear mold assembly (102) comprises a rear mold plate (103), a rear mold core (104) arranged on the rear mold plate (103), and a first fixed plate (105), a second fixed plate (106), and a third fixed plate (107) arranged in sequence below the rear mold plate (103); a side core pulling assembly (200) is provided on the rear mold plate (103), wherein the side core pulling assembly (200) comprises a first core pulling structure (202) and a second core pulling structure (203) arranged in a mirror image, and both the first core pulling structure (202) and the second core pulling structure (203) comprise a core pulling slider (210) arranged on the rear mold plate (103) for forming the side structure of the product. , a guide structure (220) and a limiting structure (230) matched with the core-pulling slider (210); a rifle-type core-pulling assembly (300) is provided in the front mold assembly (101) and the rear mold assembly (102), and the rifle-type core-pulling assembly (300) includes a rifle rod (310) connected to the front mold assembly (101) and passing through the front mold assembly (101) and the rear mold assembly (102), a first sleeve (311) screwed to the rifle rod (310), a first gear structure (320) arranged on the outside of the first sleeve (311), and a second gear structure (330) gear-engaged with the first gear structure (320) for forming an internal thread of a molded product, and the rod body of the rifle rod (310) has a threaded structure.

2. The automobile connecting rod rifling mold according to claim 1, characterized in that: The rifle rod (310) comprises a first limiting block (312) located at the top end thereof and fixed on the front mold assembly (101); a first limiting rod (313) and a second limiting rod (314) are provided on both sides of the first limiting block (312) for preventing the rifle rod (310) from rotating; and a first limiting groove (315) and a second limiting groove (316) are provided on both sides of the first limiting block (312) for cooperating with the first limiting rod (313) and the second limiting rod (314).

3. The automobile connecting rod rifling mold according to claim 1, characterized in that: The Rifle core pulling assembly (300) further comprises a first ball bearing structure (321) arranged above the first gear structure (320) and connected to the first sleeve (311), and a second ball bearing structure (322) arranged below the first gear structure (320) and connected to the first sleeve (311).

4. The automobile connecting rod rifling mold according to claim 1, characterized in that: A second limiting block (323) is provided on the outside of the first sleeve (311), and the second limiting block (323) is used to limit and fix the first gear structure (320).

5. The automobile connecting rod rifling mold according to claim 1, characterized in that: The second gear structure (330) comprises a first forming portion (331) located at the top thereof for forming an internal thread of a product, a gear portion (332) located in the middle thereof and tooth-engaged with the first gear structure (320), a threaded portion (333) located at the bottom thereof for demoulding, and a limiting base (334) screwed to the outside of the threaded portion (333).

6. The automobile connecting rod rifling mold according to claim 5, characterized in that: The limiting base (334) includes a third limiting groove (336) located on the outside thereof and a connecting block (335) passing through the third limiting groove (336) and connected to the second fixing plate (106); the third fixing plate (107) has a fourth limiting groove matching the third limiting groove (336).

7. The automobile connecting rod rifling mold according to claim 1, characterized in that: The guide structure (220) includes a guide column (221) provided in the core-pulling slider (210) and connected to the front mold assembly (101), and a guide block (222) provided on both sides of the core-pulling slider (210) and connected to the rear mold plate (103). A core-pulling sliding groove is formed between the guide block (222) and the rear mold plate (103), and the core-pulling slider (210) slides in the core-pulling sliding groove to pull the core.

8. The automobile connecting rod rifling mold according to claim 1, characterized in that: The limiting structure (230) comprises a third limiting block (231) arranged on the rear mold core (104), an oblique protrusion (232) being provided on the third limiting block (231), and a fourth limiting groove (233) cooperating with the oblique protrusion (232) being provided at the bottom of the core-pulling slider (210).

9. The automobile connecting rod rifling mold according to claim 5, characterized in that: The rear mold core (104) is provided with a plurality of second molding parts (108) for molding the bottom grooves of the product, and the bottom surface of the rear mold core (104) is provided with a second sleeve (109) sleeved above the gear part (332) and abutting against the bottom surface of the rear mold core (104).

10. The automobile connecting rod rifling mold according to claim 1, characterized in that: The mold opening stroke of the front mold assembly (101) and the rear mold assembly (102) is less than 170 mm.

Images