Die structure capable of realizing quick replacement and replacement method thereof

Abstract

The mold structure comprises a pair of mold frames capable of relatively rotating around a first axis to be opened and closed, each mold frame comprises a mold shell, a mold sleeve and a mold, and the mold shell and the mold sleeve are arranged in the outer side circumferential portion of the mold and the inner side circumferential portion of the mold sleeve. The mold structure further comprises a positioning protruding block arranged on one of the mold structures in a protruding mode and a limiting groove formed in the other one of the mold structures in a concave mode, and the positioning protruding block is used for being embedded in the limiting groove during mold closing. The limiting groove is longer than the positioning protruding block, the positioning protruding block is used for abutting against a second arc face, close to one end of the first axis, of the limiting groove through a first arc face, close to one end of the first axis, of the positioning protruding block during mold closing, and the axis of the first arc face and the axis of the second arc face coincide with the first axis. Each die frame further comprises a pressing mechanism which is arranged on the die sleeve and used for pressing the end, away from the first axis, of the die so that the first arc surface and the second arc surface can abut against each other. According to the mold structure, a pair of molds can be replaced at the same time, and the replacement efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing, and in particular to a mold structure capable of realizing rapid replacement and a replacement method thereof. Background Art

[0002] With the continuous development of the beverage industry, the requirements for the mold replacement time of the blow molding machine are getting higher and higher. When the same blow molding machine blows different bottle shapes, the corresponding molds need to be replaced. The existing blow molding machine mold replacement requires the help of other tools, and a pair of molds need to be replaced separately. The mold replacement time is long, which greatly affects the working efficiency of the blow molding machine. Summary of the invention

[0003] The object of the present invention is to provide a mold structure and a replacement method thereof that can realize rapid replacement of the mold without the aid of other tools, and a pair of molds can be replaced at the same time, with relatively high replacement efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A mold structure capable of realizing rapid replacement, comprising a pair of mold frames capable of relatively rotating around a first axis to open and close, each of the mold frames comprising a mold shell, a mold sleeve abutting against the inner side of the mold shell, and a mold detachably abutting against the inner side of the mold sleeve, the mold and the mold sleeve being matched and connected by arc grooves and arc flanges arranged thereon in a one-to-one correspondence, the mold being rotatable relative to the mold sleeve along its circumferential direction, and the mold structure further comprising a positioning protrusion convexly arranged on one of the outer peripheral portion of the mold and a limiting groove concavely arranged on the other of the outer peripheral portion of the mold and the inner peripheral portion of the mold sleeve, the positioning protrusion being used to be embedded in the limiting groove when the mold is closed;

[0006] The limiting groove is longer than the positioning protrusion, and the positioning protrusion is used to abut against the second arc surface of the limiting groove near one end of the first axis through its first arc surface near one end of the first axis during mold closing, and the axes of the first arc surface and the second arc surface coincide with each other and coincide with the first axis;

[0007] Each of the mold frames also includes a clamping mechanism disposed on the mold sleeve and used for clamping one end of the mold away from the first axis so that the first arc surface and the second arc surface are pressed against each other.

[0008] Preferably, the arc groove is recessed on the outer circumference of the mold, and the positioning protrusion is recessed in the arc groove; the arc flange is recessed on the inner circumference of the mold sleeve, and the limiting groove is recessed in the arc flange.

[0009] Preferably, the clamping mechanism comprises a clamping block rotatably arranged on the mold sleeve around a second axis, a driving arm slidably arranged on the mold sleeve in a direction parallel to the first axis, and a driver arranged on the mold sleeve and used for driving the driving arm to slide;

[0010] In both the clamping block and the driving arm, the clamping mechanism further includes a driving shaft rotatably arranged on one of them around its own axis, and a driving groove opened on the other one, and the driving shaft passes through the driving groove.

[0011] More preferably, the pressing block has a limit position and an unlocking position, and the pressing block is used to switch between the limit position and the unlocking position by rotating around the second axis:

[0012] When the pressing block is in the limiting position, the pressing block is used to press the end of the mold away from the first axis;

[0013] When the pressing block is switched from the limiting position to the unlocking position, the pressing block rotates away from the end of the mold away from the first axis.

[0014] More preferably, the driving shaft is arranged on the pressing block, and the driving groove is opened in the driving arm.

[0015] More preferably, the groove direction of the driving groove intersects with the sliding direction of the driving arm.

[0016] More preferably, the clamping mechanism further comprises a guide member provided on the mold sleeve and used for guiding the driving arm.

[0017] More preferably, the second axis is perpendicular to the first axis.

[0018] Preferably, a pair of mold frames are arranged symmetrically relative to the mold center line.

[0019] A method for replacing a mold structure capable of realizing rapid replacement is implemented by the above-mentioned mold structure, comprising the following steps:

[0020] The clamping mechanism is actuated to loosen the end of the mold away from the first axis;

[0021] The pair of mold shells are rotated to open, and the mold sleeves are rotated away from the corresponding molds, so that the positioning protrusions and the corresponding limiting grooves are disengaged from each other;

[0022] Taking out a pair of the molds in a closed state;

[0023] Putting the pair of molds that need to be replaced into the pair of opened mold shells, and keeping the heights of the arc groove and the arc flange the same during the insertion process;

[0024] Rotate and close the pair of mold shells so that the positioning protrusions enter the corresponding limiting grooves;

[0025] The clamping mechanism is actuated to clamp the end of the mold away from the first axis, so that the first arc surface and the corresponding second arc surface are pressed against each other.

[0026] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: the present invention can realize a mold structure that can be quickly replaced and a replacement method thereof, by respectively setting a positioning protrusion and a limiting groove on both the mold and the mold sleeve, and the two surfaces used to press against each other when the mold is closed are respectively a first arc surface and a second arc surface, and the axes of the first arc surface and the second arc surface coincide with the first axis center line. Through this arrangement, when the mold needs to be replaced, it is only necessary to drive the clamping mechanism to loosen the end of the mold away from the first axis center line, and then rotate to open a pair of mold shells. In the process of the mold shell rotating away from the mold with the mold sleeve, there will be no interference between the first arc surface and the second arc surface, and the effective separation of the two can be achieved, and the mold opening process is the separation process. The mold can be quickly replaced without the aid of other tools, and a pair of molds can be replaced at the same time, and the replacement efficiency is relatively high, thereby ensuring that the working efficiency of the bottle blowing machine is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Attached Figure 1 The structure of the mold structure according to the specific embodiment of the present invention is schematically shown. Figure 1 (The clamping block is in the limit position);

[0028] Attached Figure 2 The structure of the mold structure according to the specific embodiment of the present invention is schematically shown. Figure 2 (The clamping block is in the unlocked position);

[0029] Attached Figure 3 It is a schematic diagram of the cross-sectional structure of the mold structure when the mold is closed;

[0030] Attached Figure 4 It is a schematic diagram of the cross-sectional structure of the mold structure when the mold is opened and the mold is replaced;

[0031] Attached Figure 5 For attachment Figure 1 A schematic diagram of the cross-sectional structure at the positioning protrusion;

[0032] Attached Figure 6 For attachment Figure 1 A schematic cross-sectional view of the structure at the clamping mechanism;

[0033] Attached Figure 7 For attachment Figure 2 A schematic diagram of the cross-sectional structure at the positioning protrusion;

[0034] Attached Figure 8 For attachment Figure 2 Schematic diagram of the cross-sectional structure at the clamping mechanism.

[0035] Wherein: 1. first axis; 2. mold frame; 21. mold shell;

[0036] 22, mold sleeve; 221, arc flange; 222, limiting groove; 2221, second arc surface;

[0037] 23. mold; 231. arc groove; 232. positioning protrusion; 2321. first arc surface;

[0038] 24. Clamping mechanism; 241. Second axis; 242. Clamping block; 2421. Driving shaft; 243. Driving arm; 2431. Driving groove; 244. Driver; 245. Guide member. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0040] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0041] In the description of the embodiments of the present invention, it should be understood that the terms "length", "inside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The disclosure below provides many different embodiments or examples to implement different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present invention. In addition, the embodiments of the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0046] See also Figure 1-4 As shown, this embodiment provides a mold structure that can be quickly replaced, including a pair of mold frames 2 that can rotate and open relatively around a first axis 1, wherein line AB is the mold center line, and the pair of mold frames 2 are axially symmetrically arranged relative to the mold center line.

[0047] Each mold frame 2 includes a mold shell 21, a mold sleeve 22 abutting against the inner side of the mold shell 21, and a mold 23 detachably abutting against the inner side of the mold sleeve 22. The mold shell 21, the mold sleeve 22 and the mold 23 are respectively semicircular arc columns. The mold 23 and the mold sleeve 22 are connected by corresponding circular arc grooves 231 and circular arc flanges 221 thereon. The mold 23 can rotate relative to the mold sleeve 22 along its circumferential direction through the connection.

[0048] The mold structure also includes a positioning protrusion 232 convexly arranged on one of the outer periphery of the mold 23 and an inner periphery of the mold sleeve 22, and a limiting groove 222 concavely arranged on the other of the two. The positioning protrusion 232 is used to be embedded in the limiting groove 222 when the mold is closed.

[0049] In this embodiment, the arc groove 231 is recessed on the outer periphery of the mold 23 , and the positioning protrusion 232 is recessed in the arc groove 231 ; the arc flange 221 is recessed on the inner periphery of the mold sleeve 22 , and the limiting groove 222 is recessed in the arc flange 221 .

[0050] See also Figure 3-4 As shown, the length of the limiting groove 222 along the circumferential direction is longer than the length of the positioning protrusion 232 along the circumferential direction. The positioning protrusion 232 is used to press against the second arc surface 2221 of the limiting groove 222 near the first axis 1 through its first arc surface 2321 near the first axis 1 when the mold is closed. The axes of the first arc surface 2321 and the second arc surface 2221 coincide with each other and coincide with the first axis 1. Each mold frame 2 also includes a clamping mechanism 24 provided on the mold sleeve 22 and used to press the end of the mold 23 away from the first axis 1 so that the first arc surface 2321 and the second arc surface 2221 press against each other.

[0051] With this arrangement, when the mold 23 needs to be replaced, it is only necessary to drive the clamping mechanism 24 to loosen the end of the mold 23 away from the first axis 1, and then rotate and open the pair of mold shells 21. In the process of the mold shell 21 rotating away from the mold 23 with the mold sleeve 22, there will be no interference between the first arc surface 2321 and the second arc surface 2221, and the two can be effectively separated. The mold opening process is the separation process. During the mold opening process, the rotation path of the second arc surface 2221 is located at Figure 3-4 The CD is online.

[0052] See also Figure 1-2 As shown, the clamping mechanism 24 includes a clamping block 242 rotatably provided on the mold sleeve 22 around a second axis 241, a driving arm 243 slidably provided on the mold sleeve 22 in a direction parallel to the first axis 1, a driver 244 provided on the mold sleeve 22 and used for driving the driving arm 243 to slide, and a guide member 245 provided on the mold sleeve 22 and used for guiding the driving arm 243.

[0053] The pressing block 242 has a limit position and an unlocking position, and the pressing block 242 is used to switch between the limit position and the unlocking position by rotating around the second axis 241:

[0054] When the pressing block 242 is in the limiting position, the pressing block 242 is used to press the end of the mold 23 away from the first axis 1;

[0055] When the pressing block 242 is switched from the limiting position to the unlocking position, the pressing block 242 rotates away from the end of the mold 23 away from the first axis 1 .

[0056] In both the pressing block 242 and the driving arm 243, the pressing mechanism 24 further includes a driving shaft 2421 rotatably arranged on one of them around its own axis, and a driving slot 2431 opened on the other of them, and the driving shaft 2421 is inserted into the driving slot 2431. The rotation axis of the driving shaft 2421 is parallel to the second axis 241, and the two are arranged in the horizontal direction and perpendicular to the first axis 1 arranged in the vertical direction.

[0057] In this embodiment, the driving shaft 2421 is disposed on the pressing block 242 , and the driving groove 2431 is opened on the upper portion of the driving arm 243 . The groove direction of the driving groove 2431 intersects with the sliding direction of the driving arm 243 .

[0058] With this setup:

[0059] When the mold is closed, the driver 244 drives the driving arm 243 to move downward, and the driving arm 243 presses the driving shaft 2421 inward through the driving groove 2431, so that the pressing block 242 rotates counterclockwise around the second axis 241 and blocks the end of the mold 23 away from the first axis 1, thereby pressing the mold 23;

[0060] When the mold is opened, the driver 244 drives the driving arm 243 to move upward, and the driving arm 243 squeezes the driving shaft 2421 outward through the driving slot 2431, so that the clamping block 242 rotates clockwise around the second axis 241 and moves away from the end of the mold 23 away from the first axis 1, thereby unlocking the mold 23.

[0061] A method for replacing a mold structure capable of realizing rapid replacement is implemented by the above-mentioned mold structure, comprising the following steps:

[0062] The clamping mechanism 24 is activated, the driver 244 drives the driving arm 243 to move upward, and the clamping block 242 rotates clockwise around the second axis 241 to loosen the end of the mold 23 away from the first axis 1;

[0063] The pair of mold shells 21 are driven to rotate and open relative to each other, so that the mold sleeve 22 rotates away from the corresponding mold 23, so that the positioning protrusion 232 and the corresponding limiting groove 222 are disengaged from each other without interference under the cooperation of the first arc surface 2321 and the second arc surface 2221;

[0064] A pair of molds 23 in a closed state are directly taken out by an external robot;

[0065] The pair of molds 23 in the closed state to be replaced are sent into the pair of mold shells 21 in the open state by an external manipulator, and the arc groove 231 and the arc flange 221 are kept at the same height during the sending of the mold 23 (this can be achieved by setting the pick-up and placement height of the manipulator, that is, the manipulator only moves in a single axis);

[0066] The pair of mold shells 21 are driven to rotate relative to each other and close together, so that the positioning protrusions 232 enter the corresponding limiting grooves 222;

[0067] The clamping mechanism 24 is activated, the driver 244 drives the driving arm 243 to move downward, and the clamping block 242 rotates counterclockwise around the second axis 241 to clamp the end of the mold 23 away from the first axis 1, so that the first arc surface 2321 and the corresponding second arc surface 2221 are pressed against each other.

[0068] In this way, a pair of molds 23 can be quickly replaced without the aid of other tools, and a pair of molds 23 can be replaced at the same time. The replacement efficiency is relatively high, thereby ensuring that the working efficiency of the bottle blowing machine is relatively high.

[0069] See also Figure 5-8 As shown: Figure 5-6 , the pressing block 242 is in the limit position; Figure 7-8 In the embodiment, the pressing block 242 is in the unlocked position. When the pressing block 242 is in the unlocked position, the operator manually drives the mold 23 to rotate an angle relative to the mold sleeve 22, that is, the mold 23 can be directly taken out, and the mold 23 can be quickly replaced.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A mold structure capable of realizing rapid replacement, comprising a pair of mold frames capable of relatively rotating around a first axis, each of the mold frames comprising a mold shell, a mold sleeve disposed against the inner side of the mold shell, and a mold detachably disposed against the inner side of the mold sleeve, the mold and the mold sleeve being matched and connected by arc grooves and arc flanges disposed thereon in a one-to-one correspondence, the mold being capable of rotating relative to the mold sleeve along its circumferential direction, characterized in that: In both the outer peripheral portion of the mold and the inner peripheral portion of the mold sleeve, the mold structure further includes a positioning protrusion convexly arranged on one of them and a limiting groove concavely arranged on the other one, and the positioning protrusion is used to be embedded in the limiting groove when the mold is closed; The limiting groove is longer than the positioning protrusion, and the positioning protrusion is used to abut against the second arc surface of the limiting groove near one end of the first axis through its first arc surface near one end of the first axis during mold closing, and the axes of the first arc surface and the second arc surface coincide with each other and coincide with the first axis; Each of the mold frames also includes a clamping mechanism disposed on the mold sleeve and used for clamping one end of the mold away from the first axis so that the first arc surface and the second arc surface are pressed against each other.

2. The mold structure capable of realizing rapid replacement according to claim 1, characterized in that: The arc groove is recessed on the outer peripheral portion of the mold, and the positioning protrusion is recessed in the arc groove; the arc flange is recessed on the inner peripheral portion of the mold sleeve, and the limiting groove is recessed in the arc flange.

3. The mold structure capable of realizing rapid replacement according to claim 1, characterized in that: The clamping mechanism comprises a clamping block rotatably arranged on the die sleeve around a second axis, a driving arm slidably arranged on the die sleeve in a direction parallel to the first axis, and a driver arranged on the die sleeve and used to drive the driving arm to slide; In both the clamping block and the driving arm, the clamping mechanism further includes a driving shaft rotatably arranged on one of them around its own axis, and a driving groove opened on the other one, and the driving shaft passes through the driving groove.

4. The mold structure capable of realizing rapid replacement according to claim 3 is characterized in that: The pressing block has a limit position and an unlocking position, and the pressing block is used to switch between the limit position and the unlocking position by rotating around the second axis. When the pressing block is in the limiting position, the pressing block is used to press the end of the mold away from the first axis; When the pressing block is switched from the limiting position to the unlocking position, the pressing block rotates away from the end of the mold away from the first axis.

5. The mold structure capable of realizing rapid replacement according to claim 3 is characterized in that: The driving shaft is arranged on the pressing block, and the driving groove is opened in the driving arm.

6. The mold structure capable of realizing rapid replacement according to claim 3 is characterized in that: The groove direction of the driving groove intersects with the sliding direction of the driving arm.

7. The mold structure capable of realizing rapid replacement according to claim 3 is characterized in that: The clamping mechanism also includes a guide member which is arranged on the mold sleeve and is used to guide the driving arm.

8. The mold structure capable of realizing rapid replacement according to claim 3, characterized in that: The second axis is perpendicular to the first axis.

9. The mold structure capable of realizing rapid replacement according to claim 1, characterized in that: The pair of mold frames are arranged symmetrically relative to the mold center line.

10. A method for replacing a mold structure capable of realizing rapid replacement, realized by the mold structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: The clamping mechanism is actuated to loosen the end of the mold away from the first axis; The pair of mold shells are rotated to open, and the mold sleeves are rotated away from the corresponding molds, so that the positioning protrusions and the corresponding limiting grooves are disengaged from each other; Taking out a pair of the molds in a closed state; Putting the pair of molds that need to be replaced into the pair of opened mold shells, and keeping the heights of the arc groove and the arc flange the same during the insertion process; Rotate and close the pair of mold shells so that the positioning protrusions enter the corresponding limiting grooves; The clamping mechanism is actuated to clamp the end of the mold away from the first axis, so that the first arc surface and the corresponding second arc surface are pressed against each other.

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