CN110789137A

CN110789137A - Acrylic plate joint mold and joint forming method thereof

Info

Publication number: CN110789137A
Application number: CN201810866000.8A
Authority: CN
Inventors: 周子轩; 周阳
Original assignee: Shenzhen Jiaoyang Display Products Co Ltd
Current assignee: Shenzhen Jiaoyang Display Products Co Ltd
Priority date: 2018-08-01
Filing date: 2018-08-01
Publication date: 2020-02-14

Abstract

The invention discloses an acrylic plate joint mould, which relates to the technical field of joint forming and comprises the following components: the bearing plate is used for placing acrylic plates to be jointed; the fixing mechanisms are arranged on two sides of the length direction of the bearing plate, and after the acrylic plates are spliced end to end, the acrylic plates are tightly abutted against the bearing plate through the fixing mechanisms and fixed; and the abutting mechanisms are arranged on two sides of the width direction of the bearing plate and positioned on two sides of the bearing plate, and provide abutting force for the acrylic plate so that splicing surfaces on two sides of the acrylic plate abut against each other. The invention has the following advantages and effects: the seam shaping of inferior gram force board of being convenient for promotes the advantage of bonding effect.

Description

Acrylic plate joint mold and joint forming method thereof

Technical Field

The invention relates to the technical field of seam forming, in particular to an acrylic plate seam die.

Background

In the production of products having a ring-shaped structure, a material having a good plasticity, such as acrylic sheet, is generally selected. Through heating the acrylic plate, the acrylic plate is softened and is convenient for bending and forming, and the softened acrylic plate is bonded end to form a required annular structure.

The bonding mode that has usually is after splicing the acrylic plate head and the tail, utilizes glue to follow the gap and pours into, keeps the certain time again to glue and solidifies, and it is the person of processing that most extrudees the acrylic plate who forms annular structure through both hands at present in the manufacture process until glue solidifies. But utilize this mode to realize the seam shaping of ya keli board, there is machining efficiency slow, especially make the stress inhomogeneous between the concatenation face at ya keli board head and the tail both ends, lead to the bonding effect of glue between the concatenation face poor, influence product quality, there is the part that can improve.

Disclosure of Invention

The invention aims to provide an acrylic plate joint mould which has the advantages of facilitating the joint forming of acrylic plates and improving the bonding effect.

The technical purpose of the invention is realized by the following technical scheme:

an acrylic panel seaming die, comprising: the bearing plate is used for placing acrylic plates to be jointed; the fixing mechanisms are arranged on two sides of the length direction of the bearing plate, and after the acrylic plates are spliced end to end, the acrylic plates are tightly abutted against the bearing plate through the fixing mechanisms and fixed; and the abutting mechanisms are arranged on two sides of the width direction of the bearing plate and positioned on two sides of the bearing plate, and provide abutting force for the acrylic plate so that splicing surfaces on two sides of the acrylic plate abut against each other.

By adopting the technical scheme, in the process of forming the joints of the acrylic plates, firstly the acrylic plates to be jointed are placed on the bearing plate, then the abutting mechanisms arranged at the two sides of the width direction of the bearing plate are utilized to apply abutting force to the acrylic plates so as to enable the splicing surfaces at the two sides of the acrylic plates to abut against each other, then the fixing mechanisms arranged at the two sides of the length direction of the bearing plate are utilized to apply pressure towards the bearing surface of the bearing plate to the acrylic plates so as to enable the acrylic plates to be abutted against and fixed on the bearing plate by the fixing mechanisms, so as to realize the tight fit between the splicing surfaces at the head end and the tail end of the acrylic plates, finally glue is utilized to be poured into the joints formed by splicing the head end and the tail end of the acrylic plates, the aim of fixedly connecting the head end and the tail end of the acrylic plates is fulfilled by adopting the joint mould, replace original needs to rely on the staff to extrude the ya keli board and wait for the refrigerated seam shaping mode of glue, make the atress even between the concatenation face at ya keli board head and the tail both ends, improve the bonding effect of glue between the concatenation face, improve product quality.

Further, the fixing mechanism is a quick clamp assembled on the bearing plate, and the quick clamp includes: the clamp comprises a handle, a base, a connecting body, a mounting plate and a chuck, wherein one end of the connecting body is connected with the handle, the other end of the connecting body is connected with the mounting plate, and the base is assembled on the bearing plate.

Through adopting above-mentioned technical scheme, utilize the active grab with the ya keli board centre gripping and support tightly on the loading board, convenient operation, and stability is high.

Further, offer the confession along the extending direction on the mounting panel the dead slot of chuck sliding fit, the external screw thread end has been offered along circumference to the outer wall of chuck, the mounting panel both sides all be equipped with chuck screw-thread fit's lock nut.

Through adopting above-mentioned technical scheme, realize that the chuck can the movable adjustment to satisfy the not unidimensional ya keli board of centre gripping, when the mobile position of chuck on the mounting panel is adjusted to needs, at first unscrew the one end lock nut on the chuck, remove the chuck again to suitable position, make the chuck can carry out the centre gripping to the ya keli board, screw up lock nut at last, make chuck and mounting panel fixed Assembly.

Further, lock nut with be provided with the gasket between the mounting panel, the gasket adopts the brass material to make.

Through adopting above-mentioned technical scheme, set up the gasket between lock nut and mounting panel, can increase the frictional force between lock nut and the mounting panel, improve lock nut's assembly stability, the preferred brass gasket that has good corrosion resistance and wearability simultaneously has, can improve the life of gasket.

Furthermore, one end of the chuck close to the bearing plate is provided with a rubber sleeve, and the rubber sleeve is made of fluororubber.

Through adopting above-mentioned technical scheme, establish the rubber sleeve at the pot head of chuck and acrylic plate contact, thereby improve the frictional force between chuck and the acrylic plate, on the other hand can utilize the area of contact on rubber sleeve increase chuck and acrylic plate surface, thereby reduce the pressure that the acrylic plate received the chuck, prevent that the chuck from causing the scratch to the acrylic plate surface and damaging, the rubber sleeve is preferred to be adopted the fluororubber material to make simultaneously, make the rubber sleeve have high temperature resistant, resistant oil, high vacuum and acid and alkali-resistance, the characteristics of multiple chemical resistance, improve the life of rubber sleeve.

Furthermore, the bearing plate is provided with a containing groove for containing glue dripping from the splicing surface of the acrylic plate.

Through adopting above-mentioned technical scheme, in order to prevent that glue from permeating between loading board and the ya keli board from the gap between the concatenation face, cause and glue when glue solidifies the back ya keli board and glue on the loading board, consequently set up the storage tank on the loading board for glue can the holding in the storage tank when permeating the loading board from the ya keli board, make glue that permeates the ya keli board and be close to loading board one side can not direct contact with the ya keli board.

Further, the tightening mechanism includes: the fixing rod is arranged on the bearing plate, one end of the fixing rod, which is close to the central line direction of the bearing plate, is provided with a mounting hole along the extending direction of the fixing rod, and the cross section of the mounting hole is waist-shaped; the movable rod is assembled in the mounting hole in a sliding mode and matched with the mounting hole, and an external thread end is formed at one end, close to the fixed rod, of the movable rod; and the number of the first and second groups,

and the sleeve is axially fixed and radially matched and assembled in a rotating way by the fixed rod, and an internal thread end in threaded fit with the external thread end is arranged on the sleeve.

By adopting the technical scheme, when the abutting mechanism is required to apply abutting force to the head end and the tail end of the acrylic plate, so that the abutting surfaces on the two sides of the acrylic plate are abutted tightly, the sleeve assembled with the fixed rod is rotated, the movable rod is matched with the installation cavity, and the cross section of the installation cavity is waist-shaped, so that the movable rod assembled with the thread of the inner thread end of the sleeve is axially fixed and radially rotatably matched with the sleeve, the movable rod can be driven to move and abut against the acrylic plate by rotating the sleeve, and finally the abutting surfaces on the two sides of the acrylic plate are abutted tightly, so that the abutting surfaces on the head end and the tail end of the acrylic plate are uniformly stressed, the bonding effect of glue between the abutting surfaces is improved, and the product quality is improved.

Furthermore, the sleeve is close to the fixed rod one end circumference interval has set firmly elasticity card foot, the supply has been seted up on the inner wall that the fixed rod is close to the open end elasticity card foot inlays the ring channel of establishing.

Through adopting above-mentioned technical scheme, in order to realize the sleeve and take place relative rotation between the dead lever when, the sleeve can not take place the displacement in radial direction, consequently, the sleeve is close to dead lever one end circumference interval and sets firmly the elasticity card foot, and set up on the inner wall that the dead lever is close to the open end and supply the elasticity card foot to inlay the ring channel of establishing, through drawing in the elasticity card foot so that the elasticity card foot can move to the position of ring channel along the sleeve inner wall in, the elasticity card foot supports in the ring channel under self elasticity effect, thereby can realize the radial normal running fit's of axial fixity purpose between sleeve and the dead lever.

The second objective of the present invention is to provide a method for forming a seam of an acrylic sheet seam mold, which is convenient for a manufacturer to understand the processing technology of the mold, so as to form the acrylic sheet seam.

a seam forming method of an acrylic plate seam mold is based on the acrylic plate seam mold and comprises the following steps:

blanking: processing the acrylic plate into a long strip-shaped substrate according to a preset size;

cutting: symmetrically forming first notches on two sides of the head end and the tail end of the substrate by using a numerically controlled lathe, and then forming second notches on the substrate at intervals along the length direction by using the numerically controlled lathe, wherein the interval of the first notches is equal to half of that of the second notches, and the maximum interval of the second notches is smaller than the side length of the male die, so that a protruding part is formed between every two adjacent notches, and the extending direction of the protruding part is far away from the central line of the substrate;

preheating: heating and softening the substrate through an acrylic softening furnace;

bending: bending and molding the substrate which is softened by heating into a ring shape, wherein the cross section of the substrate is rectangular;

trimming: cutting the head end and the tail end of the substrate by using a numerical control lathe so that the cutting parts at the head end and the tail end of the substrate are combined to form a V-shaped notch after the head end and the tail end of the substrate are spliced;

trimming: removing the convex part which is bent and deformed by using a numerical control lathe to ensure that the surface of the bent and formed product is smooth;

clamping: splicing the head end and the tail end of the substrate, then placing the spliced substrate on a bearing plate, and adjusting the tightness degree of a sleeve so that splicing surfaces of the head end and the tail end of the substrate are mutually abutted under the action of movable rods on two sides of the bearing plate, and meanwhile, a seam formed by splicing the head end and the tail end of the substrate is positioned right above the accommodating groove;

fixing: clamping and abutting the substrate on the bearing plate by using a quick clamp;

dispensing: and finally, filling the glue along the gap, and keeping for a certain time until the glue is solidified.

In conclusion, the invention has the following beneficial effects:

1. the seam forming of the acrylic plate is completed by adopting the seam mould, and the original seam forming mode that the acrylic plate is extruded by hands and the glue is cooled is replaced, so that the stress between the splicing surfaces at the head end and the tail end of the acrylic plate is uniform, the bonding effect of the glue between the splicing surfaces is improved, and the product quality is improved;

2. through seting up the storage tank on the loading board for glue can the holding in the storage tank when permeating the loading board from the ya keli board, makes glue that permeates the ya keli board and be close to loading board one side can not direct contact with the ya keli board, prevents that glue from permeating between loading board and the ya keli board in the gap between the concatenation face, causes to glue when glue solidifies the back ya keli board and glues on the loading board.

Drawings

FIG. 1 is a schematic view of an overall structure of a seam forming mold for an acrylic plate according to a first embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of a split structure of the tightening mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of the working state of the acrylic plate seaming mold according to the first embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a seam formed by an acrylic plate according to an embodiment of the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

fig. 7 is a schematic structural diagram of a substrate according to an embodiment of the invention.

Reference numerals: 1. a carrier plate; 2. a fixing mechanism; 21. a handle; 22. a base; 23. a linker; 24. mounting a plate; 25. a chuck; 3. a tightening mechanism; 31. fixing the rod; 32. a movable rod; 33. a sleeve; 4. an empty groove; 5. locking the nut; 6. a gasket; 7. a rubber sleeve; 8. a containing groove; 9. mounting holes; 10. an elastic clamping pin; 11. an annular groove; 12. acrylic plates; 13. a substrate; 14. a first notch; 15. a second notch; 16. a boss portion; 17. a V-shaped notch; s1: blanking; s2: cutting; s3: preheating; s4: bending; s5: trimming; s6: trimming; s7: clamping; s8: fixing; s9: and (6) dispensing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows: referring to fig. 1, an acrylic plate seam mold includes a bearing plate 1, a fixing mechanism 2 and a tightening mechanism 3. The carrier plate 1 is used to place acrylic plates 12 (shown in fig. 4) to be seamed. The abutting mechanisms 3 are arranged on two sides of the width direction of the bearing plate 1, one abutting force is provided for the acrylic plate 12 through the abutting mechanisms 3, and therefore after the acrylic plate 12 is spliced in advance, the splicing surfaces on two sides of the acrylic plate 12 abut against each other under the action of the abutting mechanisms 3. Fixing mechanism 2 sets up in loading board 1 length direction's both sides, and both sides respectively are equipped with two, through fixing mechanism 2's setting, after the end to end concatenation of inferior gram force board 12, utilize fixing mechanism 2 to support inferior gram force board 12 tightly on loading board 1 to fixed inferior gram force board 12.

Referring to fig. 1 and 2, the fixing mechanism 2 is a quick clamp assembled on a bearing plate 1, the quick clamp including: handle 21, base 22, connecting body 23, mounting panel 24 and chuck 25, connecting body 23 one end is connected with handle 21, and the other end is connected with mounting panel 24, and base 22 is fixed assembly on loading board 1. In order to increase the friction between the hand of the operator and the handle 21 and further facilitate the operator to press the handle 21, the handle 21 is sleeved with an anti-slip rubber sleeve 7.

Referring to fig. 1 and 2, since the acrylic plate 12 has a plurality of different specifications in actual processing, in order to enable the mold to have the capability of processing acrylic plates with various specifications, a mounting plate 24 is provided with a hollow groove 4 along the extending direction, and a chuck 25 is slidably assembled through the hollow groove 4. And meanwhile, an external thread end is arranged on the outer wall of the chuck 25 along the circumferential direction, and the two sides of the mounting plate 24 are both provided with locking nuts 5 matched with the chuck 25 in a threaded manner. When the adjustment collet 25 is moved to a proper position on the mounting plate 24 so that the collet 25 can hold the acrylic plate 12, the lock nut 5 is tightened so that the collet 25 is fixedly fitted on the mounting plate 24. In order to increase the friction force between the locking nut 5 and the mounting plate 24 and improve the assembling stability of the locking nut 5, a gasket 6 is arranged between the locking nut 5 and the mounting plate 24, and the gasket 6 is made of brass. And a rubber sleeve 7 is also assembled at one end of the clamping head 25 close to the bearing plate 1, and the rubber sleeve 7 is made of fluororubber. The rubber sleeve 7 is used for increasing the stress area between the clamping head 25 and the acrylic plate 12, reducing the pressure of the acrylic plate 12 on the clamping head 25 and preventing the acrylic plate 12 from being damaged.

Referring to fig. 4-6, in order to prevent the glue from penetrating between the bearing plate 1 and the acrylic plate 12 from the gap between the splicing surfaces, and the acrylic plate 12 is adhered to the bearing plate 1 after the glue is solidified, the bearing plate 1 is provided with the accommodating groove 8, so that the glue can be accommodated in the accommodating groove 8 when penetrating from the acrylic plate 12 to the bearing plate 1, and the glue penetrating to one side of the acrylic plate 12 close to the bearing plate 1 cannot directly contact with the acrylic plate 12. Meanwhile, the use amount of the glue can not be controlled in actual production, so that the glue can be remained on the surface of a joint when the glue is too much, the overall aesthetic feeling of a product is influenced, and the cleaning is inconvenient. Therefore, in the process of processing the acrylic plate 12, the cutting can be performed at the head end and the tail end of the acrylic plate 12, so that the cutting parts at the two ends of the spliced head end and the tail end of the acrylic plate 12 are combined to form the V-shaped notch 17, and the glue can be solidified in the V-shaped notch 17 when the glue is excessive, and cannot remain on the surface of the acrylic plate 12.

Referring to fig. 1 and 3, the tightening mechanism 3 includes a fixed lever 31, a movable lever 32, and a sleeve 33. The fixing rod 31 is arranged on the bearing plate 1, meanwhile, a mounting hole 9 is formed in one end, close to the central line of the bearing plate 1, of the fixing rod 31, and the cross section of the mounting hole 9 is waist-shaped. The movable rod 32 is slidably assembled in the mounting hole 9, is matched with the mounting hole 9, and has a top plate fixed at one end, so that the contact area between the movable rod 32 and the acrylic plate 12 (as shown in fig. 4) can be increased, the stability of the movable rod 32 when pushing the acrylic plate 12 can be improved on one hand, and the surface of the acrylic plate 12 can be prevented from being damaged on the other hand. The sleeve 33 is axially fixed and radially fitted with the fixing rod 31. Meanwhile, an external thread end is arranged at one end of the movable rod 32 close to the fixed rod 31, and an internal thread end in thread fit with the external thread end is arranged on the sleeve 33. When splicing surfaces on two sides of the acrylic plate 12 need to be abutted against each other, the sleeve 33 assembled with the fixed rod 31 is rotated, and the movable rod 32 is matched with the installation cavity, and the cross section of the installation cavity is waist-shaped, so that the movable rod 32 assembled with the thread at the inner thread end of the sleeve 33 is axially fixed and radially and rotatably matched with the sleeve 33, the acrylic plate 12 can be driven to move and abutted against the movable rod by rotating the sleeve 33, and finally, the splicing surfaces on two sides of the acrylic plate 12 are abutted against each other.

Referring to fig. 3, in order to realize the axial fixed radial rotation fit between the sleeve 33 and the movable rod 32, the elastic clamping pins 10 are fixedly arranged at intervals in the circumferential direction at one end of the sleeve 33 close to the fixed rod 31, and the inner wall of the fixed rod 31 close to the opening end is provided with an annular groove 11 for the elastic clamping pins 10 to be embedded. When the elastic clamping leg 10 is folded to move to the position of the annular groove 11 along the inner wall of the sleeve 33, the elastic clamping leg 10 is abutted against the annular groove 11 under the action of the elasticity of the elastic clamping leg 10, so that the sleeve 33 and the fixing rod 31 can be axially fixed and radially rotatably matched.

The working process is summarized as follows:

in the process of forming the joints of the acrylic plates 12, firstly, the acrylic plates 12 to be jointed are placed on the bearing plate 1, then, the abutting mechanisms 3 arranged at the two sides of the width direction of the bearing plate 1 are utilized to apply abutting force to the acrylic plates 12 so as to enable the splicing surfaces at the two sides of the acrylic plates 12 to abut against each other, then, the fixing mechanisms 2 arranged at the two sides of the length direction of the bearing plate 1 are utilized to apply pressure towards the bearing surface of the bearing plate 1 to the acrylic plates 12 so as to enable the acrylic plates 12 to be abutted against and fixed on the bearing plate 1 by the fixing mechanisms 2, so as to realize the tight fit between the splicing surfaces at the head end and the tail end of the acrylic plates 12, finally, glue is utilized to be poured into the joints formed by splicing along the head end and the tail end of the acrylic plates 12, the aim of fixedly connecting the head end and the tail end of the acrylic plates 12 is fulfilled after the glue is solidified, the joints of the acrylic plates 12 are formed by adopting the joint mould, the original seam forming mode that the acrylic plate 12 needs to be extruded by hands and glue cooling is waited for is replaced, so that the stress between the splicing surfaces at the head end and the tail end of the acrylic plate 12 is uniform, the bonding effect of the glue between the splicing surfaces is improved, and the product quality is improved.

Example two: a seam forming method of an acrylic plate seam mold comprises the following steps:

s1: processing the acrylic plate 12 into a long strip-shaped substrate 13 according to a preset size;

s2: symmetrically forming first notches 14 on two sides of the head end and the tail end of the substrate 13 by using a numerically controlled lathe, and then forming second notches 15 on the substrate 13 at intervals along the length direction by using the numerically controlled lathe, wherein the distance between the first notches 14 is equal to half of the distance between the second notches 15, and the maximum distance between the second notches 15 is smaller than the side length of a male die, so that a protruding part 16 is formed between every two adjacent second notches 15, and the extending direction of the protruding part 16 is far away from the central line of the substrate 13;

s3: heating and softening the substrate 13 through an acrylic softening furnace;

s4: bending and molding the substrate 13 which is softened by heating into a ring shape, wherein the cross section of the substrate is rectangular;

s5: cutting the head end and the tail end of the substrate 13 by using a numerical control lathe, so that the cutting parts at the head end and the tail end of the substrate 13 are combined to form a V-shaped notch 17 after the head end and the tail end of the substrate 13 are spliced;

s6: removing the convex part 16 which is in bending deformation by using a numerical control lathe, so that the surface of the product which is formed by bending is smooth;

s7: firstly, splicing the head end and the tail end of a substrate 13, then placing the spliced substrate 13 on a bearing plate 1, and adjusting the tightness degree of a sleeve 33 so that splicing surfaces at the head end and the tail end of the substrate 13 are mutually abutted under the action of movable rods 32 at two sides of the bearing plate 1, and meanwhile, a seam formed by splicing the head end and the tail end of the substrate 13 is positioned right above an accommodating groove 8;

s8: clamping and abutting the substrate 13 on the bearing plate 1 by using a quick clamp;

s9: and finally, filling the glue along the gap, and keeping for a certain time until the glue is solidified.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. An acrylic panel seaming die, comprising:

a carrier plate (1) for placing acrylic plates (12) to be seamed;

the fixing mechanisms (2) are provided with a plurality of groups, the fixing mechanisms (2) are arranged on two sides of the length direction of the bearing plate (1), and after the acrylic plates (12) are spliced end to end, the acrylic plates (12) are tightly abutted on the bearing plate (1) through the fixing mechanisms (2) and the acrylic plates (12) are fixed; and the number of the first and second groups,

and the abutting mechanisms (3) are provided with a plurality of groups, and the abutting mechanisms (3) are arranged on two sides of the width direction of the bearing plate (1) and positioned on two sides of the bearing plate (1) to provide abutting force for the acrylic plate (12) so as to enable splicing surfaces on two sides of the acrylic plate (12) to abut against each other.

2. The acrylic plate seaming die according to claim 1, wherein the fixing means (2) is a quick clamp fitted on the carrier plate (1), the quick clamp comprising: handle (21), base (22), connector (23), mounting panel (24) and chuck (25), connector (23) one end with handle (21) are connected, the other end with mounting panel (24) are connected, base (22) assembly is in on loading board (1).

3. The acrylic plate seam die as claimed in claim 2, wherein the mounting plate (24) is provided with a hollow groove (4) for the sliding assembly of the chuck (25) along the extending direction, the outer wall of the chuck (25) is provided with a first external thread end along the circumferential direction, and both sides of the mounting plate (24) are provided with locking nuts (5) which are in threaded fit with the chuck (25).

4. An acrylic plate seaming die according to claim 3, wherein a washer (6) is arranged between the locking nut (5) and the mounting plate (24), the washer (6) being made of brass.

5. Acrylic plate seaming mould according to claim 4, characterised in that the end of the collet (25) close to the carrier plate (1) is fitted with a rubber sleeve (7), the rubber sleeve (7) being made of viton.

6. The acrylic plate seam die according to claim 1, wherein the bearing plate (1) is provided with a receiving groove (8) for receiving glue dripping from the splicing surface of the acrylic plate (12).

7. An acrylic seaming die according to claim 1, wherein the hold-down mechanism (3) comprises:

the fixing rod (31) is arranged on the bearing plate (1), one end, close to the central line direction of the bearing plate (1), of the fixing rod (31) is provided with a mounting hole (9) along the extending direction of the fixing rod (31), and the cross section of the mounting hole (9) is waist-shaped;

the movable rod (32) is assembled in the mounting hole (9) in a sliding mode and matched with the mounting hole (9), and an external thread end is formed at one end, close to the fixed rod (31), of the movable rod (32); and the number of the first and second groups,

and the sleeve (33) is axially fixed and radially matched and assembled in a rotating manner by the fixing rod (31), and an internal thread end in threaded fit with the external thread end is arranged on the sleeve (33).

8. The acrylic plate seaming die as claimed in claim 7, wherein elastic clamping legs (10) are fixedly arranged at intervals in the circumferential direction at one end of the sleeve (33) close to the fixing rod (31), and an annular groove (11) for the elastic clamping legs (10) to be embedded in is formed in the inner wall of the fixing rod (31) close to the opening end.

9. A seam forming method for an acrylic sheet seam mould, for producing an acrylic sheet seam mould according to any one of claims 1-8, the seam forming method comprising:

blanking: processing the acrylic plate (12) into a long strip-shaped substrate (13) according to a preset size;

cutting: symmetrically forming first notches (14) on two sides of the head end and the tail end of the substrate (13) by using a numerical control lathe, then forming second notches (15) on the substrate (13) at intervals along the length direction by using the numerical control lathe, wherein the interval of the first notches (14) is equal to half of that of the second notches (15), the maximum interval of the second notches (15) is smaller than the side length of a male die, so that a protruding part (16) is formed between the adjacent second notches (15), and the extending direction of the protruding part (16) is far away from the central line of the substrate (13);

preheating: heating and softening the substrate (13) by an acrylic softening furnace;

bending: bending and molding the substrate (13) which is softened by heating into a ring shape, wherein the cross section of the substrate is rectangular;

trimming: cutting the head end and the tail end of the substrate (13) by using a numerical control lathe so as to enable the cutting positions of the head end and the tail end of the substrate (13) to be combined to form a V-shaped notch (17) after the head end and the tail end of the substrate (13) are spliced;

trimming: removing the convex part (16) which is bent and deformed by using a numerical control lathe to ensure that the surface of the bent and formed product is smooth;

clamping: firstly, splicing the head end and the tail end of a substrate (13), then placing the spliced substrate (13) on a bearing plate (1), and adjusting the tightness degree of a sleeve (33) so that splicing surfaces at the head end and the tail end of the substrate (13) are mutually abutted under the action of movable rods (32) at two sides of the bearing plate (1), and meanwhile, a seam formed by splicing the head end and the tail end of the substrate (13) is positioned right above an accommodating groove (8);

fixing: clamping and abutting the substrate (13) on the bearing plate (1) by using a quick clamp;