CN213353189U

CN213353189U - Mold system for producing annular rubber sleeve

Info

Publication number: CN213353189U
Application number: CN202022194223.XU
Authority: CN
Inventors: 朱六生
Original assignee: Wuhu Precision Transmission System Research Institute
Current assignee: Wuhu Precision Transmission System Research Institute
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-04
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a mould system for producing annular gum cover belongs to gum cover processing technology field. The utility model comprises a rubber sleeve sheet production mould and an annular splicing mould, wherein the rubber sleeve sheet production mould comprises a lower mould and an upper mould, the top of the lower mould is used for placing rubber sheet blanks, and groove forming blocks are placed on two sides of the top of the rubber sheet blanks; the annular splicing mold further comprises an auxiliary forming mold arranged at the bottom of the lower mold, and an avoiding cavity is upwards formed in the bottom of the auxiliary forming mold. Aiming at the defects of high manufacturing cost and poor sealing performance of the tooth-shaped rubber sleeve in the prior art, the produced rubber sleeve has good sealing performance and long service life, and the mold does not need to be frequently replaced when the tooth-shaped rubber sleeves with different sizes are manufactured, so that the production cost is reduced.

Description

Mold system for producing annular rubber sleeve

Technical Field

The utility model belongs to the technical field of the gum cover processing, more specifically say, relate to a mould system for producing annular gum cover.

Background

The tooth-shaped transmission belt is generally applied to the field of current mechanical transmission, a tooth-shaped rubber sleeve is mainly used as an outer die of the tooth-shaped transmission belt, and the quality of the tooth-shaped rubber sleeve and the length of the service life directly influence the quality of a product and the high and low production cost.

At present, the tooth-shaped rubber sleeve is manufactured by two methods, one is a flat die method, and the other is a round die method. The flat die method is that the designed tooth form is made into a flat die with a certain length and width, the rubber sleeve rubber material is put in the flat die and is vulcanized by a flat vulcanizing machine into a tooth form rubber sheet with a specified length, and then the vulcanized rubber sheet is vulcanized into a cylinder shape by a joint die according to the designed size. The flat die method has the advantage of low cost, but cracks and gaps are easy to appear at joints, so that the defects of poor sealing performance and low durability of the finished joints are caused. The circular die method is that a designed tooth form is processed on a cylindrical die, the die is used for manufacturing a tooth form rubber sleeve, and then a sealing surface and the required height are cut out by adopting a trimming process. The rubber sleeve manufactured by the circular die method is uniform in texture and good in sealing performance, but the rubber sleeves of different sizes are required to be provided with dies of different sizes, so that the manufacturing method is complex, and the production cost is greatly increased by frequently replacing the dies. Therefore, it is urgently needed to design a mold system for producing the annular rubber sleeve, which can be suitable for different sizes and has good sealing performance.

Through retrieval, a large number of patents have been published on the production die of the tooth-shaped rubber sleeve, for example, the Chinese patent application numbers are as follows: 201822276690X, entitled: rubber tooth type drive belt vulcanizes gum cover mould, this application discloses a take tooth gum cover and vulcanizer, belongs to drive belt vulcanization technical field. The middle part of the inner side of the rubber sleeve with teeth of the utility model is provided with an inner tooth section, and the end part of the inner side surface of the rubber sleeve with teeth is provided with an inner smooth section; the rubber sleeve with teeth is sleeved outside the rigid inner mold. In the vulcanizing device, the end part of the inner side surface of the rubber sleeve with teeth is provided with the inner smooth section, and the peripheral side surface of the cover plate is matched with the inner smooth section of the rubber sleeve with teeth, so that the sealing effect is improved; sealed clamp suit takes the tooth gum cover outside, and sealed clamp corresponds the setting with the apron, and sealed clamp is used for sealed to apron and takes the tooth gum cover chucking, avoids gaseous because of sealed poor entering of effect between gum cover and the centre form to improve the vulcanization effect of drive belt, and then improve the vulcanization shaping quality of drive belt. The scheme is a good exploration for the production mold of the tooth-shaped rubber sleeve, but still has a further optimization space, and the exploration for the production mold structure of the tooth-shaped rubber sleeve in the industry never stops.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

The utility model provides a mould system for producing annular gum cover, the gum cover sealing performance that produces is good, long service life to tooth type gum cover cost of manufacture is high among the prior art, sealing performance is poor not enough, the utility model provides a need not frequently change the mould when just making not unidimensional tooth type gum cover, has reduced manufacturing cost.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model discloses a mould system for producing annular gum cover, including gum cover piece production mould and annular concatenation mould, wherein gum cover piece production mould includes lower mould and upper mould, and the lower mould top is used for placing film blank, and recess shaping piece has been placed to film blank's top both sides; the annular splicing mold further comprises an auxiliary forming mold arranged at the bottom of the lower mold, and an avoiding cavity is upwards formed in the bottom of the auxiliary forming mold.

As a further improvement, the width direction both sides of the lower die are provided with limit baffle plates, and the length direction both sides of the limit baffle plates extend beyond the length direction both sides of the die teeth.

As a further improvement, the length direction both sides of lower mould are provided with blocks, blocks the width direction both ends that the both ends of piece extended to the lower mould.

As a further improvement, the cross section of the groove forming block is of a rectangular structure.

As a further improvement of the utility model, the width range of the groove forming block is 30mm-60 mm.

As the utility model discloses further improvement, limit baffle is last to be provided with a plurality of screw holes along length direction, on the lower mould with limit baffle on the corresponding position of screw hole also seted up a plurality of screw holes, the bolt passes the screw hole on limit baffle and the lower mould in proper order and fixes limit baffle on the lower mould.

As a further improvement of the utility model, the bottom of the lower die is placed on the base of the machine tool.

As a further improvement, the top of the upper die is fixed on the machine tool frame.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a mould system for producing annular gum cover, during the use, place film blank on the mould tooth at lower mould top, utilize the mould to extrude film blank downwards, rubber flows to the shaping tooth inslot under the extrusion force effect of lower mould to the bottom profile of tooth structure of shaping gum cover piece. Simultaneously because the recess becomes the piece because film blank's top both sides have still been placed, recess becomes the piece and is extruded film blank's top both sides and finally with fashioned gum cover piece top looks parallel and level under the extrusion force effect of lower mould, can one shot forming top both sides be the notched gum cover piece of taking the tooth type structure, the shaping process has been reduced, also need not use extra mould, only adopt detachable recess become the piece can, simple to use is convenient, the production time has been saved, greatly reduced manufacturing cost.

(2) The utility model discloses a mould system for producing annular gum cover, the intracavity of dodging in supplementary forming die bottom is placed to the gum cover piece that will splice in proper order, and its both ends are respectively from dodging after the chamber both sides upwards encircle forming annular structure, pass the outside of supplementary forming die and lower mould in proper order, finally place both ends at the lower mould top and splice together, make the relative laminating of breach of its both sides form coupling groove, and splice in proper order in the shaping tooth's socket at lower mould top in the tooth profile structure of good gum cover piece bottom, accomplish after the final concatenation department location of annular gum cover. Then place the connection and glue the piece in the coupling groove, start the mould and compress tightly downwards at the top of connecting the piece of gluing, until will connect the piece top of gluing and press to with the rubber sleeve piece top parallel and level mutually, the rubber sleeve piece both ends that will splice in proper order are glued together to form annular rubber sleeve. When in demoulding, the annular rubber sleeve is simply and conveniently removed from one side of the lower die and the auxiliary forming die.

(3) The utility model discloses a mould system for producing annular gum cover, supplementary forming die adopts on-the-spot waste material preparation to form, simple manufacture, low cost, whole preparation mould simple structure, and do not need frequently to change the mould and can make not unidimensional annular gum cover, satisfy different production demands, greatly reduced manufacturing cost.

Drawings

Fig. 1 is a schematic view of the structure of the middle rubber sleeve production mold of the present invention;

fig. 2 is a schematic top view of a lower mold of the middle rubber sleeve production mold of the present invention;

FIG. 3 is a schematic view of the lower mold when two rubber sleeve sheets are connected according to the present invention;

fig. 4 is a schematic front view of the auxiliary forming mold of the present invention;

FIG. 5 is a schematic side view of the auxiliary forming mold according to the present invention;

FIG. 6 is a schematic view of the structure of the middle rubber sleeve sheet of the present invention;

FIG. 7 is a schematic view of the structure of two rubber sleeves adhered together

Fig. 8 is a schematic structural view of the middle ring-shaped rubber sleeve of the present invention.

The reference numbers in the figures are:

100. an upper die; 110. a machine tool frame; 200. a lower die; 210. a limit baffle; 211. a threaded hole; 220. a die tooth; 230. Forming a tooth socket; 240. a blocking block; 250. forming a groove forming block; 260. a machine tool base; 300. a rubber sleeve sheet; 301. a notch; 310. a tooth-shaped structure; 320. a connecting groove; 330. an annular rubber sleeve; 400. a film stock; 500. connecting the rubber blocks; 600. an auxiliary forming die; 610. and a cavity is avoided.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be further described with reference to the following examples.

Example 1

As shown in fig. 8, the annular rubber sleeve 330 required to be formed in this embodiment is a cylindrical structure, in which the annular rubber sleeve 330 has a tooth-shaped section inside and a smooth plane outside. Specifically, as shown in fig. 6, the annular rubber sleeve of the present embodiment is formed by sequentially splicing a plurality of rubber sleeve sheets 300, a plurality of tooth structures 310 are uniformly arranged at the bottom of the rubber sleeve sheet 300 at intervals, and the tooth structures 310 of the rubber sleeve sheet 300 are located inside the annular rubber sleeve 330. Splice the gum cover piece 300 of different quantity in proper order to can form the annular gum cover 330 of different diameter size, only need use one set of mould preparation the gum cover piece 300 of equidimension, can satisfy the not demand of equidimension of annular gum cover 330, avoid frequently changing the mould like traditional circular mould method, greatly reduced manufacturing cost.

As shown in fig. 6, in this embodiment, notches 301 are formed downward on both sides of the top of each rubber sleeve sheet 300, the notches 301 of two adjacent rubber sleeve sheets 300 are correspondingly attached together to form a connecting groove 320, that is, as shown in fig. 7, the right notch 301 of the left rubber sleeve sheet 300 and the left notch 301 of the right rubber sleeve sheet 300 are correspondingly attached together to form a connecting groove 320, and a connecting rubber block 500 is disposed in the connecting groove 320, two adjacent rubber sleeve sheets 300 are connected by the connecting rubber block 500, the connecting groove 320 provides a platform for the connecting rubber block 500, if the connecting rubber block 500 is directly placed at the middle top of two rubber sleeve sheets 300 without notches 301 to be pressed and bonded downward, the rubber flow is likely to be insufficient, the adhesion is not tight, and the rubber fusion is likely to occur under insufficient pressure, and the tooth-shaped structure 310 at the bottom is likely to deform due to over-large pressure and under pressure, and will connect gluey piece 500 to place back in connecting groove 320 in this embodiment, when the mould of rethread top extrudeed downwards, can effectively guarantee the abundant flow of rubber, avoid appearing owing to control the poor problem that leads to of connection performance crackle, sealing performance are poor about, effectively improved annular gum cover 330's quality and life. In this embodiment, the thickness of the adhesive cover sheet 300 is S, and the range of S is 15mm-20 mm. Specifically, the thickness S of the adhesive cover sheet 300 in this embodiment is 15 mm. Generally, the larger the thickness of the rubber sleeve sheet 300 is, the more difficult the adhesion between two adjacent rubber sleeve sheets 300 is, and the rubber sleeve sheet 300 structure with the notches 301 on two sides can well solve the problem.

During the in-service use in this embodiment, to connect gluey piece 500 and place in coupling groove 320, and use the mould will connect gluey piece 500 top extrusion to with the rubber sleeve piece 300 top parallel and level mutually, connect gluey piece 500 under the pressure effect, bond two adjacent rubber sleeve pieces 300 together, because it packs the bonding to connect gluey piece 500 to embed in the coupling groove 320, make the extrusion force of the side direction flow production of rubber in the extrusion process little, and rubber flow is more abundant, it is good to have guaranteed about two adjacent rubber sleeve pieces 300 bonding effect, avoid like traditional flat die method appearing easily connect the department crack, the gap scheduling problem, the sealing performance and the durability of annular rubber sleeve 330 have been improved.

As shown in fig. 6, in this embodiment, the notch 301 is a rectangular notch 301, the connection groove 320 is a rectangular groove structure, and the connection rubber block 500 is a rectangular rubber block matched with the connection groove 320. The top position of the connection rubber block 500 extends beyond the top position of the connection groove 320 in the present embodiment, wherein the top position of the connection rubber block 500 extends beyond the top position of the connection groove 320 by a value ranging from 2mm to 3 mm. Specifically, the top position of the connection rubber block 500 in the present embodiment extends 2mm beyond the top position of the connection groove 320. As shown in fig. 6, the width of the notch 301 in this embodiment is L, and L ranges from 30mm to 60mm, specifically, the width L of the notch 301 in this embodiment is 30 mm. In this embodiment, the distance between the bottom of the notch 301 and the top of the tooth bottom of the tooth structure 310 below the notch 301 is H, where H ranges from 4mm to 6mm, and specifically, the distance H between the bottom of the notch 301 and the top of the tooth bottom of the tooth structure 310 below the notch 301 is 4mm in this embodiment.

With reference to fig. 1-5, the present embodiment of a mold system for producing an annular rubber sleeve includes a rubber sleeve sheet production mold and an annular splicing mold, wherein the rubber sleeve sheet production mold includes a lower mold 200 and an upper mold 100 disposed above the lower mold 200, a plurality of mold teeth 220 are disposed at the top of the lower mold 200 at uniform intervals along a width direction, a forming tooth slot 230 is disposed between two adjacent mold teeth 220, wherein the top of the lower mold 200 is used for placing a rubber sheet blank 400, groove forming blocks 250 are disposed on two sides of the top of the rubber sheet blank 400, the cross section of each groove forming block 250 is a rectangular structure, the groove forming blocks 250 are matched with the notches 301 on two sides of the formed rubber sleeve sheet 300, the width range of each groove forming block 250 is 30mm-60mm, specifically, the width of each groove forming block 250 in this embodiment is 30 mm. In this embodiment, the top of the upper mold 100 is fixed on the machine frame 110, and is driven by the machine to move up and down.

The annular splicing mold in this embodiment also includes a lower mold 200 and an upper mold 100 disposed above the lower mold 200, the top of the lower mold 200 is provided with a plurality of mold teeth 220 at regular intervals along the width direction, a forming tooth slot 230 is disposed between two adjacent mold teeth 220, wherein the top of the lower mold 200 is used for placing the film blank 400. Annular concatenation mould still includes that the bottom of lower mould 200 is provided with supplementary forming die 600, supplementary forming die 600 bottom central point puts and upwards has seted up and dodges chamber 610, dodge chamber 610 and make things convenient for the gum cover strip that a plurality of gum cover pieces 300 splice formed to pass in dodging chamber 610, encircle whole supplementary forming die 600 a week and finally form circular structure, and make the annular at the rectangular both ends of gum cover connect the department and place the lower mould 200 top in supplementary forming die 600 top, it is fixed that the convenience is rectangular to the gum cover, the adhesion that the follow-up annular of being convenient for connects is handled. In this embodiment, the lower die 200 and the upper die 100 in the annular splicing die still adopt the lower die 200 and the upper die 100 in the die unit for producing the rubber sleeve sheet 300, and the annular adhesion treatment of the rubber sleeve can be easily realized only by additionally adding an auxiliary forming die 600 in the die unit for producing the rubber sleeve sheet 300. The auxiliary forming die 600 in the embodiment is made of on-site waste materials, is simple to manufacture, low in cost and simple in structure, and the annular rubber sleeve 330 with different sizes can be manufactured without frequently replacing the die, so that different production requirements are met, and the production cost is greatly reduced.

As shown in fig. 5, in this embodiment, the left and right sides of the avoiding cavity 610 extend beyond the outer edges of the mold teeth 220 at the two ends of the lower mold 200 in the length direction, that is, the length of the avoiding cavity 610 is greater than the length of the rubber sleeve sheet 300, so that the rubber sleeve strip can conveniently pass through the avoiding cavity 610. Specifically, in the present embodiment, the cross section of the avoidance cavity 610 has a rectangular structure, that is, the avoidance cavity 610 is a rectangular cavity. Be provided with one deck abrasionproof layer on the inside lateral wall of dodging chamber 610 wherein, avoid the rectangular inside wearing and tearing that appear of gum cover.

The production method of the annular rubber sleeve comprises the following steps:

s1: molding of the rubber sleeve sheet 300: the film blank 400 is placed on the lower die 200, the groove forming blocks 250 are placed on the tops of the two ends of the film blank 400, the upper die 100 is started to press the film blank 400 downwards, as shown in fig. 1, in the embodiment, the upper die 100 runs downwards, contacts with the groove forming blocks 250 on the two sides, continues to run downwards to press the groove forming blocks 250 into the two sides of the film blank 400 until the groove forming blocks are flush with the film blank 400, and the rubber sleeve sheet 300 with the notches 301 on the two sides is formed after the groove forming blocks 250 are taken out from the two sides of the film blank 400. In this embodiment, the groove forming block 250 is made of a hard material and will not be integrated with the film blank 400, and serves to form the notches 301 on both sides of the film strip 300.

As shown in fig. 1 and 2, in this embodiment, a plurality of mold teeth 220 are uniformly spaced at intervals along the width direction at the top of the lower mold 200, and a forming tooth slot 230 is formed between two adjacent mold teeth 220, when in use, the film blank 400 is placed on the mold teeth 220 at the top of the lower mold 200, the film blank 400 is pressed downward by the upper mold 100, and the rubber flows into the forming tooth slot 230 under the pressing force of the lower mold 200, so as to form the bottom tooth structure 310 of the rubber sleeve sheet 300. Simultaneously because recess shaping piece 250 has still been placed to film blank 400's top both sides, recess shaping piece 250 is extruded into film blank 400's top both sides and finally is parallel and level with fashioned gum cover piece 300 top under the extrusion force effect of lower mould 200, thereby the breach 301 of shaping gum cover piece 300 top both sides, during the drawing of patterns, with recess shaping piece 250 from can taking out in breach 301 promptly, can once only take out the gum cover piece 300 of tooth type structure 310 of top both sides for breach 301, the shaping process has been reduced, also need not use extra mould, only adopt detachable recess shaping piece 250 can, and is simple to use convenient, and the production time is saved, greatly reduced manufacturing cost. The rubber sleeve sheet 300 with the notch 301 structure is manufactured to facilitate the subsequent adhesion forming of the annular rubber sleeve 330.

The cross section of the groove forming block 250 in this embodiment is a rectangular structure, the shape of the groove forming block 250 is matched with the shape of the notch 301 on both sides of the formed rubber sleeve sheet 300, and the length range of the groove forming block 250 is 30mm-60mm, specifically, the length of the groove forming block 250 in this embodiment is 30 mm. In this embodiment, the top of the upper mold 100 is fixed on the machine frame 110, and is driven by the machine to move up and down. In this embodiment, the number of the mold teeth 220 of the lower mold 200 is greater than the number of the tooth-shaped structures 310 at the bottom of the rubber sleeve 300, and the edge of the rubber sleeve 300 is repaired after the rubber sleeve 300 is manufactured by using the mold, so as to manufacture the finally required rubber sleeve 300 structure.

S2: splicing the rubber sleeve sheet 300: the two rubber sleeve sheets 300 are adjacently spliced, notches 301 on two sides of the two rubber sleeve sheets are oppositely attached to form a connecting groove 320, a connecting rubber block 500 is placed in the connecting groove 320, and after the two rubber sleeve sheets are pressed and formed, the connecting rubber block 500 connects the two adjacent rubber sleeve sheets 300. As shown in fig. 3, in the present embodiment, the tooth-shaped structures 310 at the bottoms of two rubber sleeve sheets 300 are placed on the lower mold 200, specifically, in the present embodiment, one of the rubber sleeve sheets 300 is placed on the left half side of the top of the lower mold 200, and the other rubber sleeve sheet 300 is placed on the right half side of the top of the lower mold 200, and at this time, the tooth-shaped structures 310 at the bottoms of the rubber sleeve sheets 300 are embedded into the forming tooth grooves 230 at the top of the lower mold 200, so that an additional positioning tool is not required to be used when the two rubber sleeve sheets 300 are spliced, and time and. The connecting rubber block 500 is placed in the connecting groove 320 formed by the two notches 301 at the joint of the two rubber sleeve sheets 300, the upper die 100 is started to press downwards at the top of the connecting rubber block 500 until the top of the connecting rubber block 500 is pressed to be level with the top of the rubber sleeve sheet 300, and therefore the two rubber sleeve sheets 300 are tightly connected together. The die used for adhering the rubber sleeve sheet 300 is still the die for manufacturing the rubber sleeve sheet 300, the die does not need to be replaced, the die cost is reduced, and the use is more convenient.

S3: annular splicing: two ends of the sequentially spliced rubber sleeve sheet 300 are wound into an annular structure, edges of two sides of the rubber sleeve sheet are spliced, notches 301 on two sides of the rubber sleeve sheet are oppositely attached to form a connecting groove 320, a connecting rubber block 500 is placed in the connecting groove 320, and the annular rubber sleeve 330 is formed after compression molding. As shown in fig. 4, in this embodiment, the auxiliary forming mold 600 is placed at the bottom of the lower mold 200, wherein an avoiding cavity 610 is formed upward at the center of the bottom of the auxiliary forming mold 600, the sequentially spliced rubber sleeve sheets 300 are placed in the avoiding cavity 610 at the bottom of the auxiliary forming mold 600, and after the two ends of the rubber sleeve sheets are respectively surrounded upwards from the two sides of the avoiding cavity 610 to form an annular structure, the rubber sleeve sheets sequentially pass through the outer sides of the auxiliary forming mold 600 and the lower mold 200, and finally the two ends are placed at the top of the lower mold 200 and spliced together, so that the notches 301 at the two sides of the rubber sleeve sheets are relatively fitted to form the connecting groove 320, and the tooth-shaped structure 310 at the bottom of the sequentially spliced rubber sleeve sheets 300 is embedded in the forming tooth socket 230 at the top of the lower mold. Then, the connecting rubber block 500 is placed in the connecting groove 320, the upper die 100 is started to press down on the top of the connecting rubber block 500 until the top of the connecting rubber block 500 is pressed to be flush with the top of the rubber sleeve sheet 300, and two ends of the sequentially spliced rubber sleeve sheet 300 are adhered together, so that the annular rubber sleeve 330 is formed. When demoulding, the annular rubber sleeve 330 can be simply and conveniently removed from one side of the lower die 200 and the auxiliary forming die 600. The auxiliary forming die 600 in the embodiment is made of on-site waste materials, is simple to manufacture, low in cost and simple in structure, and the annular rubber sleeve 330 with different sizes can be manufactured without frequently replacing the die, so that different production requirements are met, and the production cost is greatly reduced.

The top position of the connection paste 500 in the above steps S2 and S3 extends beyond the top position of the connection groove 320, wherein the top position of the connection paste 500 extends beyond the top position of the connection groove 320 by a value ranging from 2mm to 3 mm. Specifically, the top position of the connection rubber block 500 in the present embodiment extends 2mm beyond the top position of the connection groove 320.

Example 2

The basic structure of the mold system for producing an annular rubber sleeve of this embodiment is the same as that of embodiment 1, and further, as shown in fig. 2, in this embodiment, two sides of the lower mold 200 in the width direction are provided with limit baffles 210, and two sides of the limit baffles 210 in the length direction extend beyond two sides of the mold teeth 220 in the length direction. The limit baffles 210 on the two sides and the upper die 100 above form a forming cavity of the rubber sleeve sheet 300, and the limit baffles 210 are used for blocking and positioning the rubber flow on the left side and the right side when the upper die 100 extrudes the rubber sheet blank 400, so that rubber is prevented from overflowing and being wasted. When the rubber sleeve sheet 300 is manufactured, the upper die 100 moves downwards to contact with the top of the groove forming block 250, the groove forming block 250 is pressed into the two sides of the rubber sheet blank 400 by continuously moving downwards until the groove forming block is flush with the rubber sheet blank 400, the rubber sheet blank 400 is continuously extruded downwards until the groove forming block moves to be stopped when contacting with the top of the limit baffle 210, the manufacturing of the rubber sleeve sheet 300 is completed, and then the groove forming block 250 is taken out from the two sides of the rubber sheet blank 400 to form the rubber sleeve sheet 300 with the notches 301 on the two sides. Wherein, the two sides of the length direction of the lower mold 200 are provided with the blocking blocks 240, and the two ends of the blocking blocks 240 extend to the two ends of the width direction of the lower mold 200, namely, the length of the blocking blocks 240 is consistent with the width of the lower mold 200, and the rubber flow of the film blank 400 can be limited from the front side to the rear side, thereby further effectively preventing the rubber overflow phenomenon and ensuring the quality of finished products.

As shown in fig. 2, in this embodiment, a plurality of threaded holes 211 are formed in the limiting baffle 210 along the length direction, a plurality of threaded holes 211 are also formed in the lower die 200 at positions corresponding to the threaded holes 211 in the limiting baffle 210, bolts sequentially pass through the limiting baffle 210 and the threaded holes 211 in the lower die 200 to fix the limiting baffle 210 on the lower die 200, and the limiting baffle 210 is detachably connected to facilitate replacement. As shown in fig. 1, in the present embodiment, the bottom of the lower mold 200 is placed on the machine base 260, and the lower mold 200 is separated from the machine base 260, so as to facilitate the subsequent placement of the auxiliary forming mold 600. When it is required to finally bond the gum cover strip, it is required to place the auxiliary molding die 600 on the machine tool base 260 and then place the lower die 200 on top of the auxiliary molding die 600.

The thickness S of the adhesive cover sheet 300 in this embodiment is 20 mm.

The top position of the connection rubber block 500 in this embodiment extends 3mm beyond the top position of the connection groove 320.

The width L of the notch 301 in this embodiment is 60 mm. In this embodiment, the distance H between the bottom of the notch 301 and the top and bottom of the tooth structure 310 below the notch 301 is 6 mm. The width of the groove forming block 250 in this embodiment is 60 mm.

Example 3

A mold system for producing an annular rubber sleeve of the present embodiment has the same basic structure as that of embodiment 1, except that the thickness S of the rubber sleeve sheet 300 in the present embodiment is 18 mm.

The top position of the connection rubber block 500 in this embodiment extends 2.5mm beyond the top position of the connection groove 320.

The width L of the notch 301 in this embodiment is 50 mm. In this embodiment, the distance H between the bottom of the notch 301 and the top and bottom of the tooth structure 310 below the notch 301 is 5 mm. The width of the groove forming block 250 in this embodiment is 50 mm.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. A mould system for producing annular gum cover which characterized in that: the rubber sleeve piece production die comprises a rubber sleeve piece production die and an annular splicing die, wherein the rubber sleeve piece production die comprises a lower die (200) and an upper die (100), the top of the lower die (200) is used for placing a rubber sheet blank (400), and two sides of the top of the rubber sheet blank (400) are provided with groove forming blocks (250); the annular splicing mold further comprises an auxiliary forming mold (600) arranged at the bottom of the lower mold (200), and an avoiding cavity (610) is upwards formed at the bottom of the auxiliary forming mold (600).

2. The mold system for producing an annular gum cover according to claim 1, wherein: limiting baffles (210) are arranged on two sides of the lower die (200) in the width direction, and two sides of the limiting baffles (210) in the length direction extend beyond two sides of the die teeth (220) in the length direction.

3. The mold system for producing an annular gum cover according to claim 1, wherein: two sides of the length direction of the lower die (200) are provided with blocking blocks (240), and two ends of each blocking block (240) extend to two ends of the width direction of the lower die (200).

4. The mold system for producing an annular gum cover according to claim 1, wherein: the section of the groove forming block (250) is of a rectangular structure.

5. A mould system for producing an annular gum cover according to claim 4, wherein: the width range of the groove forming block (250) is 30mm-60 mm.

6. A mold system for producing an annular gum cover according to claim 2, wherein: a plurality of threaded holes (211) are formed in the limiting baffle (210) along the length direction, a plurality of threaded holes (211) are also formed in the lower die (200) at positions corresponding to the threaded holes (211) in the limiting baffle (210), and bolts sequentially penetrate through the limiting baffle (210) and the threaded holes (211) in the lower die (200) to fix the limiting baffle (210) on the lower die (200).

7. The mold system for producing an annular gum cover according to claim 1, wherein: the bottom of the lower die (200) is placed on a machine tool base (260).

8. The mold system for producing an annular gum cover according to claim 1, wherein: the top of the upper die (100) is fixed on a machine tool frame (110).