CN217752330U - Preparation mould of fastener product - Google Patents

Abstract

The utility model relates to a draw preparation mould of knot product, including last mould and lower mould, still including clamp splice one and the clamp splice two that constitute the product shaping chamber with the lower mould cooperation, it has last die cavity to go up to open in the mould, it has the locating hole to go up to open on the mould of mould cavity outlying, the lower mould is opened there is the die cavity down, be provided with the location uide pin on the lower mould of die cavity outlying, the die cavity includes anterior die cavity down, middle part die cavity and rear portion die cavity, be clamp splice one installing zone between anterior die cavity and the middle part die cavity, be provided with two clamp splice locating pins on the clamp splice one installing zone, be clamp splice two mounting grooves between middle part die cavity and the rear portion die cavity, be provided with two locating pins of two clamp splices in the clamp splice two mounting grooves, still be provided with the inserts standing groove between two locating pins of two clamp splices. The mold is reasonable in structural design, the prepared pull buckle product can meet the requirement of surface appearance, and the gap between the clamping block I and the clamping block II and the upper and lower molds is utilized for exhausting, so that the defects of air pocket and the like in the preparation process can be effectively avoided.

Description

Preparation mould of fastener product

Technical Field

The utility model relates to a mould, in particular to draw preparation mould of detaining product.

Background

The pull tab product is mainly used for connecting a fender to reduce road vibration transmitted to the fender, is suitable for medium-sized heavy trucks and has the structure shown in figures 1-2. Because it belongs to the prolate structure, so the requirement to the mould is higher in the preparation process, mainly need consider following two points: 1. the parting and the die structure have certain particularity. In the preparation process of general rubber products, the mold stripping and sealing (preventing glue overflow) are mainly considered, and the product belongs to an appearance piece, so that a mold parting line and a glue injection opening groove are not required to be formed on a specific surface, and the prepared mold has certain particularity. 2. The shrinkage rates of the molds in three directions are not consistent. In the preparation process of general rubber products, the three-dimensional shrinkage rates are generally consistent, but the product cannot be applied due to the flat and long structure. When a mold is manufactured, the three-dimensional shrinkage rate needs to be separated so as to meet the requirement of shrinkage of a vulcanized rubber product and achieve the requirement of drawing size. 3. When the product is molded, the insert belonging to a product part needs to be placed at a specific position of a mold, so that a structure for positioning the insert needs to be designed. No mold is currently available that is particularly suited for use in making such tab products.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the utility model provides a draw preparation mould of detaining product, this mould structural design is reasonable, and the draw that the preparation obtained detains the product and can satisfy the surface appearance requirement, utilizes the clearance of clamp splice one and clamp splice two and upper and lower mould to do the exhaust effect, can effectively avoid defect such as the production process appearance nest gas.

The technical scheme for solving the technical problems is as follows: the utility model provides a draw preparation mould of detaining product, includes mould and lower mould, still including with the lower mould cooperation constitute the clamp splice one and the clamp splice two in product shaping chamber, upward having seted up the die cavity in the mould, go up to open on the mould of die cavity outlying have with lower mould complex locating hole, the lower mould is opened has die cavity down, is provided with on the lower mould of die cavity outlying with last die cavity locating hole complex location uide pin, the die cavity includes anterior die cavity, middle part die cavity and rear portion die cavity down, is clamp splice one installing zone between anterior die cavity and the middle part die cavity, is provided with two clamp splice locating pins on the clamp splice installing zone, is clamp splice two mounting grooves between middle part die cavity and the rear portion die cavity, is provided with two clamp splice locating pins in the clamp splice two mounting grooves, still is provided with the inserts standing groove that is used for placing the product inserts of drawing detaining between two clamp splice locating pins.

The clamp splice comprises first two clamp plates and first cavity plate connected between the first two clamp plates, all opens on the first two clamp plates with clamp splice locating pin complex clamp splice locating hole, terminal surface is the inclined plane before the first clamp plate, go up be provided with on the mould with dull and stereotyped front end inclined plane complex go up the mould inclined plane, during clamp splice installation state, on clamp splice locating hole of two clamp plates one inserted a clamp splice locating pin, the up end and the middle part die cavity up end parallel and level of cavity plate one, a clamp splice front end was located anterior die cavity top.

The second clamping block is composed of two clamping plates and a second cavity plate connected between the middle parts of the two clamping plates, two positioning holes of the second clamping block matched with the positioning pins of the second clamping block are formed in the two clamping plates, the front end face and the rear end face of the second clamping plate are both inclined planes, when the second clamping block is in an installation state, the positioning holes of the second clamping block of the two clamping plates are inserted into the positioning pins of the second clamping block, the upper end face of the second cavity plate is flush with the upper end face of the middle cavity, and the upper end face of the second cavity plate is lower than the upper end face of the rear cavity.

Further, the shrinkage ratio of the length, the width and the height of the effective working parts of the upper die and the lower die is as follows: (24-25): (4.5-5.5): 1.

four bosses used for positioning the position of the insert are arranged in the insert placing groove, and the space of the insert placing groove below the bosses forms a glue material storage cavity.

The positioning guide pins arranged on the lower die are three in number, the front end of the lower die is provided with one positioning guide pin, two sides of the rear die cavity are respectively provided with one positioning guide pin, and the upper die is provided with three positioning holes at corresponding positions.

And grooves convenient for mold stripping are arranged on the two sides of the first clamping block mounting area and the second clamping block mounting groove.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the mold is reasonable in structural design, the upper surface of the prepared pull buckle product is free of parting lines or welding marks, and the appearance requirement of the upper surface is met.

2. Because draw the shape of detaining the product very much, still need add the inserts during preparation, the utility model discloses die design has clamp splice one and clamp splice two and lower mould cooperation, on the one hand, utilizes clamp splice one and clamp splice two to make up into the chamber that can the shaping draw the knot product with the lower mould chamber of lower mould, and clamp splice two still plays the effect of pushing down the inserts location, and on the other hand utilizes clamp splice one and clamp splice two to make the exhaust action with the clearance of last lower mould, can effectively avoid defects such as nest gas to appear in the preparation process.

3. The upper die and the lower die, the clamping block I and the lower die, and the clamping block II and the lower die are in different taper fit, so that firstly, a taper guiding effect is achieved, and guiding can be achieved in the vulcanization process; and secondly, the three parts have different matching tapers, so that the mistake can be prevented.

4. The inserts of the pull buckle products are preliminarily positioned on the die in a 4 boss positioning mode, and then are pressed in place through the second pressing block, so that the inserts are prevented from deviating and deforming in the production process, and the consistency of the product preparation process is ensured.

5. Because the length-width-height ratio of the pull buckle product reaches 10:2:1, and the length-width-height ratio of the effective working part reaches 30:10:1, belonging to a special proportion, because the ratio of length to width to height is large, the shrinkage rates are inconsistent, and if a preparation mould is enlarged or reduced in an equal proportion, the prepared pull button product does not meet the requirements. In the course of research and development, the applicant found that if the length-width-height-shrinkage ratio of the effective working part of the mold is determined by standard tests, the prepared tab product is still not satisfactory, perhaps due to non-uniform front and rear thickness of the tab product and the flat length of the product. If the length, width and high shrinkage ratio of the effective working part of the die is determined through a physical test, great economic cost is required to be invested. Therefore, the determination of the ratio of the length, the width and the height of the effective working part of the prepared die is also a difficult point, and the applicant determines the ratio of the length, the width and the height of the effective working part of the prepared die as follows through creative labor: (24-25): (4.5-5.5): 1, the rest part is shrunk according to the same proportion of three directions (according to the conventional hardness-shrinkage ratio), so that the pull buckle product meeting the requirements can be prepared, and the rejection rate is low.

6. The die is positioned by the positioning guide pin, and the positioning is easy and accurate. Wherein 3 positioning guide pins on the outer side of the lower die mainly position the upper die structure and the lower die structure. And 2 clamping block positioning pins and 2 clamping block two positioning pins on the inner side are respectively used for positioning the first clamping block and the second clamping block.

7. Through the adjustment die parting line, the lower mould is reserved with a rubber block loading room, namely, a rubber material is formed in the space of the insert placing groove below the boss and is stored in the cavity, so that the rubber is prevented from flowing below the insert, and the rubber shortage phenomenon cannot occur in the preparation process.

8. The preparation mold adopts a mold pressing mode, quantitatively feeds materials, and is suitable for most rubber product preparation machines.

The technical features of the mold for manufacturing a tab product according to the present invention will be further described with reference to the accompanying drawings and examples.

Drawings

FIG. 1: one of the pull buckle products is a perspective view.

FIG. 2: a second perspective view of the tab product.

FIG. 3: the utility model discloses a preparation mould assembly drawing of fastener product.

FIG. 4 is a schematic view of: the utility model discloses use state owner looks cut-away view.

FIG. 5: the utility model discloses a preparation mould compound die state plan view of drawing buckle product (omit the part and go up the mould).

FIG. 6: fig. 7 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A.

FIG. 7: the utility model discloses above mould top view.

FIG. 8: the utility model discloses go up mould stereogram.

FIG. 9: the utility model discloses a lower mould front view.

FIG. 10: the utility model discloses a lower mould plan view.

FIG. 11: the utility model discloses lower mould stereogram.

FIG. 12: the utility model discloses a clamp splice a front view.

FIG. 13 is a schematic view of: the utility model discloses a clamp splice a plan view.

FIG. 14 is a schematic view of: the utility model discloses a clamp splice a left side view.

FIG. 15: the utility model discloses a clamp splice a stereogram.

FIG. 16: the utility model discloses a two front views of clamp splice.

FIG. 17: the utility model discloses a two top views of clamp splice.

FIG. 18 is a schematic view of: the utility model discloses a two left side views of clamp splice.

FIG. 19 is a schematic view of: the utility model discloses a clamp splice two stereogram.

In fig. 1-2, P denotes a tab product, and P1 denotes an insert for the tab product.

In fig. 1, H denotes the length of the effective working portion of the tab product.

Detailed Description

The embodiment is as follows: a preparation mold of a pull buckle product is disclosed, as shown in figures 3-19, the left end of the mold in figure 5 is defined as the front end, and the right end is defined as the rear end, and comprises an upper mold 1 and a lower mold 2, and further comprises a first clamping block 3 and a second clamping block 4 which are in clearance fit with the lower mold to form a product forming cavity, wherein an upper mold cavity 11 is arranged in the upper mold 1, a positioning hole 12 matched with the lower mold is formed in the upper mold on the periphery of the upper mold cavity, a lower mold cavity is formed in the lower mold, a positioning guide pin 21 matched with the positioning hole of the upper mold is arranged on the lower mold on the periphery of the lower mold cavity, the lower mold cavity comprises a front mold cavity 26, a middle mold cavity 27 and a rear mold cavity 28, a first clamping block mounting area 23 is arranged between the front mold cavity and the middle mold cavity, two clamping block positioning pins 22 are arranged on the first clamping block mounting area, a second clamping block mounting groove 25 is arranged between the middle mold cavity and the rear mold cavity, two clamping block mounting grooves 24 are arranged in the two clamping block mounting grooves 25, and a placing groove 29 for placing an insert for placing the pull buckle product is further arranged between the two clamping blocks. The positioning guide pin 21, the clamping block positioning pin 22 and the clamping block two positioning pin 24 are conical and have different tapers.

The first clamping block 3 is composed of two first clamping plates 31 and a first cavity plate 32 connected between the two first clamping plates, clamping block positioning holes 33 matched with the first clamping block positioning pins 22 are formed in the two first clamping plates 31, the rear ends of the first clamping plates are flush with the rear ends of the first cavity plate, the front ends of the first clamping plates are longer than the front ends of the first clamping plates, the front end face 311 of each first clamping plate is an inclined face with the lower length and the upper length, an upper mould inclined face 13 matched with the front end inclined face of the first flat plate is arranged on the upper mould, when the first clamping blocks are in an installation state, the clamping block positioning holes 33 of the two first clamping plates are inserted into the first clamping block positioning pins 22, the upper end face of the first cavity plate is flush with the upper end face of the middle mould cavity, the front ends of the first clamping blocks are located above the front mould cavity 26, and the front ends of the first clamping blocks shield the rear end of the front mould cavity 26. The upper mold slant surface 13 presses the slant surface of a front end surface 311 of the clamp plate.

The second clamping block 4 is composed of two clamping plates 41 and a second cavity plate 42 connected between the middle parts of the two clamping plates, the second clamping block 4 is approximately I-shaped, two clamping block second positioning holes 43 matched with the clamping block second positioning pins 24 are formed in the two clamping plates 41, the front end face 411 and the rear end face of the second clamping plate are both inclined faces which are long at the top and short at the bottom, namely the section shape of the second clamping plate 41 is trapezoidal, when the second clamping block is in an installation state, the clamping block second positioning holes 43 of the two clamping plates are inserted into the clamping block second positioning pins 24, the upper end faces of the second cavity plate are flush with the upper end face of the middle cavity plate 27, and the upper end faces of the second cavity plate are lower than the upper end face of the rear cavity plate 28.

In this embodiment, the first clamping block and the second clamping block are in clearance fit with the lower die, and the clearance between the first clamping block and the second clamping block can be controlled to be 0.02-0.04mm according to the matching standard of h7/f 6.

In this embodiment, the ratio of the length, the width and the height of the effective working parts of the upper die and the lower die to the shrinkage is as follows: (24-25): (4.5-5.5): 1, preferably 25:5:1, and the remainder is shrunk in the same three-dimensional ratio (conventional hardness-shrinkage ratio).

In this embodiment, be provided with four bosss 210 that are used for fixing a position the inserts position in the inserts standing groove, four bosss play the effect of preliminary location, and rethread clamp splice two compresses tightly the inserts, can prevent effectively that the inserts from taking place the displacement. The space of the insert placing groove below the boss forms a glue material storage cavity, so that the glue is prevented from flowing below the insert.

In this embodiment, the number of the positioning guide pins arranged on the lower die is three, the front end of the lower die is provided with one positioning guide pin, two sides of the rear die cavity are provided with one positioning guide pin, and the upper die is provided with three positioning holes at corresponding positions.

In this embodiment, the two sides of the first mounting area of the clamping block and the second mounting groove of the clamping block are both provided with a groove 211 convenient for mold stripping.

The utility model discloses a working process:

1. and (5) opening the mold. Opening the mold, and cleaning the inner wall cavity of the mold by adopting clear oil; after the mould is heated, oil removing agent is adopted for oil removing and cleaning to ensure that the mould cavity is clean; and then the temperature is measured by a hot die to the required temperature.

2. And (4) placing the insert. And (3) placing the insert (Z type) into an insert placing groove of the lower die, preliminarily positioning by using 4 bosses in the insert placing groove, sleeving the clamping block into the positioning pin II of the positioning clamping block, and pressing the clamping block II in place by using a rubber hammer. Thus, the insert is installed in place.

3. And installing a first clamping block. And positioning the first clamping block through a positioning pin of the first clamping block, and pressing the first clamping block in place by using a rubber hammer.

4. And placing the sizing material. And (4) placing the standard rubber blank into a lower die cavity, and slightly flattening.

5. And (5) closing the mold. And (3) closing the upper die and the lower die together through the 3 positioning guide pins on the outer side, putting the upper die and the lower die into a press, adjusting the vulcanization pressure according to the process, starting the equipment, and starting die closing and vulcanization.

6. And (6) opening the mold. Cleaning the cavity after the vulcanization is finished, and repeating the steps 1-5.

Claims (5)

1. The utility model provides a preparation mould of fastener product, includes mould (1) and lower mould (2), its characterized in that: the die comprises an upper die (1) and a lower die, and is characterized by further comprising a first clamping block (3) and a second clamping block (4) which are matched with the lower die to form a product forming cavity, wherein an upper die cavity (11) is formed in the upper die (1), positioning holes (12) matched with the lower die are formed in the upper die on the periphery of the upper die cavity, the lower die is provided with a lower die cavity, positioning guide pins (21) matched with the positioning holes of the upper die are arranged on the lower die on the periphery of the lower die cavity, the lower die cavity comprises a front die cavity (26), a middle die cavity (27) and a rear die cavity (28), a first clamping block mounting area (23) is arranged between the front die cavity and the middle die cavity, two clamping block positioning pins (22) are arranged on the first clamping block mounting area, a second clamping block mounting groove (25) is arranged between the middle die cavity and the rear die cavity, two clamping block positioning pins (24) are arranged in the second clamping block mounting groove, and an insert placing groove (29) for placing a pull buckle product insert is further arranged between the two clamping block positioning pins,

the first clamping block (3) is composed of two first clamping plates (31) and a first cavity plate (32) connected between the two first clamping plates, clamping block positioning holes (33) matched with clamping block positioning pins (22) are formed in the two first clamping plates, a front end face (311) of each clamping plate is an inclined plane, an upper mould inclined plane (13) matched with the front end inclined plane of the first flat plate is arranged on the upper mould, when the first clamping blocks are in an installation state, the clamping block positioning holes of the two first clamping plates are inserted into the positioning pins of the first clamping blocks, the upper end face of the first cavity plate is flush with the upper end face of the middle mould cavity, the front ends of the first clamping blocks (3) are positioned above the front mould cavity (26),

the second clamping block (4) is composed of two clamping plates (41) and a second cavity plate (42) connected between the middle parts of the two clamping plates, two positioning holes (43) of the second clamping block matched with the two positioning pins (24) of the clamping block are formed in the two clamping plates, the front end face (411) and the rear end face of the second clamping plate are inclined planes, the two positioning holes of the second clamping block of the two clamping plates are inserted into the two positioning pins of the clamping block in the installation state of the second clamping block, the upper end face of the second cavity plate is flush with the upper end face of the middle cavity, and the upper end face of the second cavity plate is lower than the upper end face of the rear cavity plate.

2. The mold for manufacturing a tab product according to claim 1, wherein: the shrinkage ratio of the length, the width and the height of the effective working parts of the upper die and the lower die is as follows: (24-25): (4.5-5.5): 1.

3. the mold for producing a tab product according to claim 1 or 2, wherein: four bosses (210) used for positioning the position of the insert are arranged in the insert placing groove, and a glue stock storage cavity is formed in the space of the insert placing groove below the bosses.

4. The mold for producing a tab product according to claim 1 or 2, wherein: the positioning guide pins arranged on the lower die are three in number, the front end of the lower die is provided with one positioning guide pin, two sides of the rear die cavity are provided with one positioning guide pin respectively, and the upper die is provided with three positioning holes at corresponding positions.

5. The mold for producing a tab product according to claim 1 or 2, wherein: and grooves (211) convenient for demolding are formed in the two sides of the first clamping block mounting area and the second clamping block mounting groove.

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