Novel machining die for guide block of change wheel

Abstract

The utility model provides a novel machining die for a change wheel guide block, which relates to the technical field of guide block machining dies and comprises a fixing plate and a fixedly arranged female die holder, the fixing plate is provided with a die foot and an ejection component, the die foot is provided with a male die holder, a male die core is arranged in the male die holder, and a female die core and a sprue are arranged in the female die holder. One end of the sprue is communicated with injection equipment, an upper guide cavity and two groups of symmetrically distributed upper guide block forming cavities are formed in the female mold core, a lower guide cavity matched with the upper guide cavity and lower guide block forming cavities matched with the upper guide block forming cavities one by one are formed in the male mold core, and the other end of the sprue is communicated with the lower guide cavity; according to the device, a plurality of guide blocks can be subjected to injection molding at a time, so that the injection molding efficiency is remarkably improved, the device has an automatic ejection function, and the subsequent guide blocks can be mounted on a backing plate to be matched with ribs of a change wheel for use, so that the motorcycle CVT is smoother and more stable in the running process.

Description

Technical Field

[0001] The utility model relates to the technical field of guide block processing dies, in particular to a novel processing die for a speed change wheel guide block. Background Art

[0002] At present, the speed change wheel combination guide blocks at home and abroad are mostly made of resin with appropriate additives as the main material and are processed by injection molding.

[0003] Most of the existing guide blocks are integrally injection molded and only one guide block product can be formed in one processing. Since the guide blocks are in large demand during the actual use of the speed wheel, the traditional injection molding mold processing and production effect is low. At the same time, manual intervention is required after injection molding to assist in the discharge of the guide blocks, which poses a safety hazard and is not convenient enough. The use of the guide block injection mold, the demolding effect, and the number of molds after one processing need to be further improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose a new processing mold for the speed change wheel guide block.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A new processing mold for a speed change wheel guide block comprises a fixed plate and a fixed female mold base, a mold foot and an ejection assembly are arranged on the fixed plate, a male mold base is arranged on the mold foot, a male mold core is arranged in the male mold base, a female mold core and a nozzle are arranged in the female mold base, one end of the nozzle is connected to an injection device, an upper guide cavity and two groups of symmetrically distributed upper guide block forming cavities are arranged in the female mold core, a lower guide cavity matching the upper guide cavity and a lower guide block forming cavity corresponding to the upper guide block forming cavity are arranged in the male mold core, the other end of the nozzle is connected to the lower guide cavity, and a plurality of through holes matching the ejection assembly are opened on the male mold core.

[0007] The device can injection mold multiple guide blocks at one time, thereby significantly improving the injection efficiency, and is equipped with an automatic ejection function. Subsequent guide blocks can be installed on the backing plate and then used in conjunction with the ribs of the speed change wheel to make the motorcycle CVT more smooth and stable during operation.

[0008] Furthermore, the ejection assembly includes an ejection plate, an ejector pin, a reset roller and a spring. The fixed plate is provided with an ejector plate and an ejection hole that penetrates the fixed plate and is directly below the ejector plate. The ejector plate is provided with a plurality of ejector pins that match the through holes and a reset roller that is symmetrically distributed about the male mold core. A spring is sleeved on the outer side of the reset roller, and a through hole that allows the reset roller to pass through is opened on the male mold seat.

[0009] The above scheme can realize automatic discharge of multiple guide blocks after injection molding through the ejection assembly.

[0010] Furthermore, the ejection plate is provided with a pulling pin cooperating with the nozzle to realize automatic discharge of the solidified residual material in the nozzle.

[0011] In the above scheme, during a guide block ejection process, the pulling pin can simultaneously enter the nozzle and pull out a small amount of solidified material in the nozzle, which can reduce the probability of the nozzle being blocked due to long-term injection.

[0012] Furthermore, guide rollers are symmetrically arranged on the male mold base, and guide sleeves corresponding to the guide rollers and slidingly matched with the guide sleeves are arranged in the female mold base.

[0013] The above scheme can achieve the position accuracy of the male mold base and the female mold base during the mold closing process, avoiding deviations that affect the injection molding effect.

[0014] Furthermore, a positioning ring is provided on the female mold base, and the nozzle is connected to the injection device through the positioning ring to achieve concentric docking of the two.

[0015] Furthermore, the fixing plate is connected to the die-casting equipment, and the ejection hole is equipped with an ejection equipment.

[0016] Furthermore, the master mold base adopts a two-plate mold.

[0017] The above scheme adopts a two-plate mold to make the material feeding more stable and smooth. At the same time, compared with the existing three-plate mold, it can significantly reduce the raw material input and cost, and the comprehensive use effect is better.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] Compared with the prior art, the device can injection mold multiple guide blocks at a time, thereby significantly improving the injection efficiency, and is equipped with an automatic ejection function. Subsequent guide blocks can be installed on the backing plate and then used in conjunction with the ribs of the speed wheel to make the motorcycle CVT smoother and more stable during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the male mold;

[0022] Figure 3 This is a schematic diagram of the mother mold;

[0023] Reference numerals:

[0024] 1. Fixed plate; 101. Ejector hole; 2. Mold foot; 3. Male mold seat; 4. Ejector plate; 5. Ejector pin; 6. Reset roller; 7. Spring; 8. Male mold core; 81. Lower guide block molding cavity; 82. Lower guide cavity; 83. Through hole; 9. Female mold seat; 10. Nozzle; 11. Positioning ring; 12. Female mold core; 121. Upper guide block molding cavity; 122. Upper guide cavity; 13. Guide sleeve; 14. Guide roller; 15. Pull pin. DETAILED DESCRIPTION

[0025] 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. The utility model is further described in combination with the drawings and embodiments:

[0026] like Figures 1 to 3 As shown, a new processing mold for a speed change wheel guide block comprises a fixed plate 1 and a fixed female mold base 9, a mold foot 2 and an ejection assembly are arranged on the fixed plate 1, a male mold base 3 is arranged on the mold foot 2, a male mold core 8 is arranged in the male mold base 3, a female mold core 12 and a nozzle 10 are arranged in the female mold base 9, one end of the nozzle 10 is connected to the injection device, an upper guide cavity 122 and two groups of symmetrically distributed upper guide block molding cavities 121 are arranged in the female mold core 12, a lower guide cavity 82 matching the upper guide cavity 122 and a lower guide block molding cavity 81 corresponding to the upper guide block molding cavity 121 are arranged in the male mold core 8, the other end of the nozzle 10 is connected to the lower guide cavity 82, and a plurality of through holes 83 cooperating with the ejection assembly are opened on the male mold core 8. It should be noted that the sizes of the plurality of through holes 83 are different and are respectively distributed in the lower guide cavity 82 and the lower guide block molding cavity 81.

[0027] Further refinement of the embodiment of the present utility model is as follows: Figures 1 to 3 As shown, the ejection assembly includes an ejection plate 4, an ejector pin 5, a reset roller 6 and a spring 7. The fixed plate 1 is provided with an ejector plate 4 and an ejection hole 101 which penetrates the fixed plate 1 and is located directly below the ejector plate 4. The ejector plate 4 is provided with a plurality of ejector pins 5 which cooperate with the through holes 83 and a reset roller 6 which is symmetrically distributed about the male mold core 8. The reset roller 6 is sleeved with a spring 7 on the outer side. The male mold base 3 is provided with a through hole which allows the reset roller 6 to pass through. The through hole is shown in the figure without a number. In further refinement of the scheme, the fixed plate 1 is connected to the die-casting equipment, and the ejection hole 101 is provided with an ejection equipment. The die-casting equipment and the ejection equipment are not shown in the figure, and the existing technology is used without improvement.

[0028] Further refinement of the embodiment of the present utility model is as follows: Figure 1 As shown, guide rollers 14 are symmetrically arranged on the male mold base 3, and guide sleeves 13 corresponding to and slidingly fitting with the guide rollers 14 are arranged in the female mold base 9.

[0029] Further refinement of the embodiment of the present utility model is as follows: Figure 1 As shown, a positioning ring 11 is provided on the female mold base 9, and the nozzle 10 is connected to the injection device through the positioning ring 11 to achieve concentric docking of the two.

[0030] It should be noted that the injection device, the die-casting device and the ejection device are all electrically connected to the controller, which is not shown in the figure.

[0031] The workflow of this utility model:

[0032] First, the die-casting equipment drives the male mold base 3 close to the female mold base 9 so that the two are molded together, and then the injection equipment works to inject the molten material into the nozzle 10, and then the material is injected into the lower guide cavity 82 along the nozzle 10 and simultaneously injected into the four lower guide block molding cavities 81. As the injection progresses, when the material fills the entire guide cavity and the guide block molding cavity, the injection is stopped;

[0033] In addition, the mold also includes a cooling mechanism, which is used to cool the guide block after injection to accelerate the molding. The cooling mechanism belongs to the prior art and is not described in detail in this application and is not shown. Water cooling or other methods can be used;

[0034] After the cooling and forming of the guide block is completed, the die-casting equipment drives the male mold base 3 away from the female mold base 9. At this time, the guide block will remain in the male mold core 8. When the male mold base 3 has completed its movement, the ejection equipment will work so that a number of ejector pins 5 can move up and down and then pass through a number of through holes 83 to realize the multi-point ejection process of the guide block. Then the guide block will fall into the collection frame for collection. It should be noted that in actual use, the mold needs to be rotated 90 degrees, that is, the male mold base 3 and the female mold base 9 are completed in the horizontal direction. After the ejection is completed, the ejection plate 4 can be reset (that is, reset to the attached figure of the instruction manual) under the action of the reset roller 6 and the spring 7. Figure 1 The guide blocks are placed in the position shown in the middle ejector plate 4. At this time, the injection molding operation of a group of guide blocks is completed. Then, the above process is circulated to realize the assembly line injection molding processing of the guide blocks. The guide blocks after injection molding are divided into two groups, one group includes two.

[0035] Compared with the prior art, the device can injection mold multiple guide blocks at a time, thereby significantly improving the injection efficiency, and is equipped with an automatic ejection function. Subsequent guide blocks can be installed on the backing plate and then used in conjunction with the ribs of the speed wheel to make the motorcycle CVT smoother and more stable during operation.

[0036] In some embodiments, Figure 1 As shown, the ejection plate 4 is provided with a pulling pin 15 which cooperates with the nozzle 10 to realize the automatic discharge of the solidified residual material in the nozzle 10; in this embodiment, during a guide block ejection process, the pulling pin 15 can simultaneously enter the nozzle 10 and then pull out a small amount of material solidified in the nozzle 10, which can reduce the probability of the nozzle 10 being blocked due to long-term injection use. Since the male mold base 3 and the female mold base 9 are molded in the horizontal direction, the solidified material brought out by the pulling pin 15 can also be directly dropped into the collection frame for storage.

[0037] In other embodiments, the mother mold base 9 adopts a two-plate mold; the use of a two-plate mold can make the feeding of materials smoother and smoother, and compared with the existing three-plate mold, it can significantly reduce the raw material input and cost, and the comprehensive use effect is better.

[0038] Disadvantages of three-plate molds: the proportion of finished guide blocks is small, the proportion of residual materials is large, the product cost is high, the treatment of environmental protection and secondary materials requires special equipment, and the cost is not easy to reduce.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A new processing mold for a speed change wheel guide block, characterized in that: The invention comprises a fixed plate (1) and a fixed female mold base (9), wherein a mold foot (2) and an ejection assembly are arranged on the fixed plate (1), a male mold base (3) is arranged on the mold foot (2), a male mold core (8) is arranged in the male mold base (3), a female mold core (12) and a nozzle (10) are arranged in the female mold base (9), one end of the nozzle (10) is connected to the injection device, an upper guide cavity (122) and two groups of symmetrically distributed upper guide block molding cavities (121) are arranged in the female mold core (12), a lower guide cavity (82) matching the upper guide cavity (122) and a lower guide block molding cavity (81) matching the upper guide block molding cavity (121) are arranged in the male mold core (8), the other end of the nozzle (10) is connected to the lower guide cavity (82), and a plurality of through holes (83) matching the ejection assembly are opened on the male mold core (8).

2. A novel processing mold for a speed change wheel guide block according to claim 1, characterized in that: The ejection assembly comprises an ejection plate (4), an ejector pin (5), a reset roller (6) and a spring (7); the fixed plate (1) is provided with an ejection plate (4) and an ejection hole (101) penetrating the fixed plate (1) and located directly below the ejection plate (4); the ejection plate (4) is provided with a plurality of ejector pins (5) matching the through holes (83) and a reset roller (6) symmetrically distributed about the male mold core (8); the outer side of the reset roller (6) is sleeved with a spring (7); and the male mold base (3) is provided with a through hole allowing the reset roller (6) to pass through.

3. A novel processing mold for a speed change wheel guide block according to claim 2, characterized in that: The ejection plate (4) is provided with a material pulling pin (15) matched with the nozzle (10) to realize automatic discharge of solidified residual material in the nozzle (10).

4. A novel processing mold for a speed change wheel guide block according to claim 1, characterized in that: The male mold base (3) is symmetrically provided with guide rollers (14), and the female mold base (9) is provided with guide sleeves (13) which correspond to the guide rollers (14) one by one and are slidably matched.

5. The novel processing mold for the speed change wheel guide block according to claim 1 is characterized in that: The female mold base (9) is provided with a positioning ring (11), and the nozzle (10) is connected to the injection device through the positioning ring (11) to achieve concentric docking of the two.

6. A novel processing mold for a speed change wheel guide block according to claim 2, characterized in that: The fixing plate (1) is connected to the die-casting equipment, and the ejection hole (101) is equipped with an ejection equipment.

7. The novel processing mold for the speed change wheel guide block according to claim 1 is characterized in that: The female mold base (9) adopts a two-plate mold.

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