A hoop fixing device for quickly taking out and replacing a wax mold assembly

Abstract

The application discloses a hoop fixing device capable of quickly taking, placing and replacing a wax mold group, which comprises a clamping assembly, a positioning assembly and a locking and releasing assembly; the clamping assembly comprises a fixed hoop body and a movable hoop body capable of swinging relative to each other, the fixed hoop body and the movable hoop body are hinged at one end and are free to open and close at the other end; the locking and releasing assembly is a structure capable of being operated by one hand to realize unlocking and releasing, is arranged between the free opening and closing ends and is used for opening or closing the hoop; the positioning assembly comprises a positioning cross rod and is used for positioning and supporting a wax mold group hanging rod; the fixed hoop body and the movable hoop body are locked and surrounded to form a clamping cavity, and the clamping cavity is used for circumferentially limiting and fixing the wax mold group hanging rod. The application can realize one-person and one-hand quick completion of wax mold group feeding, discharging and replacement operation, has high operation efficiency and fast rhythm, can guarantee stable clamping of the hanging rod through a double limiting structure and effectively solves the problems of complicated traditional tool operation, long time consumption for replacement and easy falling off of the wax mold, and is suitable for automatic continuous shell production line operation of the investment casting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic shell making and automatic link technology for precision investment casting, and particularly relates to a hoop fixing device capable of quickly taking, placing and replacing a wax mold group. BACKGROUND

[0002] In the production process of investment casting, the wax mold group needs to be hung by a hanger and transported by a mechanical arm to complete multiple processes such as dipping, sand spraying and drying.

[0003] The existing conventional hanger tooling has the following defects: the general buckle and bolt locking type hanger fixing structure needs to be operated by both hands, a plurality of bolts are twisted or a complex buckle is pried open, a single person cannot quickly complete loading and unloading, the replacement of the wax mold group is time-consuming, the production efficiency is low, and the automatic production line rhythm is lengthened; the general integrated circular ring hanger fixing structure has great difficulty in installing the hanging rod in position, the clamping force is insufficient, the wax mold group hanger is easy to fall off when the mechanical arm is high-speed overturned and shaken to transport the wax mold group, causing the wax mold to be scrapped and the production line to be blocked. That is, the existing hanger tooling for hanging and fixing the wax mold group does not have a single-handed quick positioning support structure, the manual feeding and discharging speed is slow, the compatibility with the automatic transportation of the mechanical arm is poor, and it is difficult to match the high-speed operation demand of the automatic continuous shell making production line. SUMMARY

[0004] The present application provides a hoop fixing device capable of quickly taking, placing and replacing a wax mold group, which aims to overcome the technical defects of the conventional hanger tooling in the prior art, such as complicated loading and unloading, poor clamping, and inability to adapt to single-handed quick operation and automatic production line.

[0005] The technical scheme for solving the above technical problems is as follows: a hoop fixing device capable of quickly taking, placing and replacing a wax mold group, which comprises a clamping assembly, a positioning assembly and a locking assembly, the clamping assembly comprises a fixed hoop body and a movable hoop body which can be opened and closed and swung relative to each other, the fixed hoop body is connected with a hanging base in the investment casting production line, one end of the movable hoop body is hingedly connected with one end of the fixed hoop body to form a hinged end, and the other end is a free opening and closing end, the locking assembly is arranged at the free opening and closing end of the movable hoop body and the fixed hoop body, the locking assembly can be operated by one hand to lock and fix or unlock and release the free opening and closing end, when the free opening and closing end is locked and fixed, a clamping cavity for clamping the hanging rod of the wax mold group is formed between the movable hoop body and the fixed hoop body, and the positioning assembly comprises a positioning cross bar, one end of the positioning cross bar is fixedly connected with the fixed hoop body, and a positioning hole is formed in the hanging rod for the positioning cross bar to pass through.

[0006] On the basis of the above technical scheme, the present application can also be improved as follows.

[0007] Further, the fixed hoop body and the movable hoop body are hingedly connected through a matched pin shaft and a pin hole at the hinged end.

[0008] Further, the fixed hoop body and the movable hoop body are provided with reset elastic members at the hinged end, and when the locking and releasing assembly is switched from the locked state to the unlocked state, the reset elastic members automatically make the free ends of the fixed hoop body and the movable hoop body away from each other to open the clamping cavity.

[0009] Further, the reset elastic member is a torsion spring arranged on the pin shaft.

[0010] The above further improved advantage is that the hinged end is provided with a reset torsion spring (reset elastic member), and the movable hoop body can be automatically popped open after unlocking, thereby eliminating the operation step of manually prying open the hoop body, greatly shortening the time consumption of wax mold group replacement, feeding and discharging, effectively speeding up the production line change rhythm.

[0011] Further, one end of the positioning cross rod is fixed to the inner side wall of the fixed hoop body, and the other end extends horizontally to the movable hoop body, and the movable hoop body is provided with a insertion hole for inserting the end of the positioning cross rod away from the fixed hoop body.

[0012] Further, the inner side walls of the movable hoop body and the fixed hoop body are provided with anti-skid silica gel.

[0013] Further, the suspension base is a chuck, a suspension chain or a fixed hanging rack.

[0014] Further, the suspension base is a chuck, the fixed hoop body is provided with an outward turning edge, and the outward turning edge is fixedly connected with the outward extending suspension arm of the chuck through a plurality of fixing bolts.

[0015] Further, the locking and releasing assembly is an elbow type quick clamp.

[0016] Further, the elbow type quick clamp comprises a mounting base and a locking seat, the mounting base is fixedly installed at the free opening and closing end of the movable hoop body, the locking seat is fixedly installed at the free opening and closing end of the fixed hoop body, and the base is connected with an operation handle, an elbow link set, an adjusting screw and a lock hook, when the operation handle is pressed in place, the lock hook is hooked with the locking seat to be self-locked.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The hoop fixing device provided by the present application adopts the basic structure that one end of the fixed hoop body is hinged with the movable hoop body and the other end is freely swung to open and close, and is matched with the locking and releasing assembly (such as the elbow type quick clamp) which can be operated by one hand to realize locking and fixing or unlocking and releasing, and all operations such as unlocking, opening, feeding and locking can be completed by one hand, without the need for double-handed cooperation to twist the bolt and pry the complex buckle, which meets the high-speed continuous operation demand of the automatic production line and significantly improves the overall production efficiency.

[0019] The device provided by the application is used for limiting and fixing the wax mold group matched hanging rod after locking, and cooperates with the positioning cross rod support or the limiting hanging rod to form a double limiting structure of "cross rod penetrating limiting / support + circumferential surrounding clamping".

[0020] The application adopts an open-close type embracing structure, which is different from the traditional integrated type circular ring penetrating structure, does not need to penetrate the rod up and down, can directly translate to take and place the hanging rod after the hoop is opened, has sufficient placement space and low alignment difficulty, further reduces the manual operation threshold, and is suitable for high-frequency and rapid feeding and discharging operation scenes.

[0021] The device can be adapted to various production line suspension bases such as a faceplate, a suspension chain and a fixed hanging rack, has simple structure, high integration degree, few parts, and is convenient to disassemble, maintain and directly add and transform on an existing automatic shell manufacturing line of investment casting, and is widely applicable. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 6 is an axial view of the clamp fixing device provided by the application in an unlocked open state;

[0023] Figure 2 Fig. 7 is an axial view of the clamp fixing device shown in Fig. 6 in a locked closed state; Figure 1

[0024] Figure 3 Fig. 8 is a front view of the clamp fixing device shown in Fig. 6; Figure 2

[0025] Figure 4 Fig. 9 is a left view of the clamp fixing device shown in Fig. 6; Figure 2

[0026] Figure 5 Fig. 10 is a top view of the clamp fixing device shown in Fig. 6; Figure 2

[0027] Figure 6 Fig. 11 is an axial view of the clamp fixing device shown in Fig. 6 after being installed on a faceplate suspension arm (each clamp fixing device is in an open state and holds a hanging rod); Figure 1

[0028] Figure 7 Fig. 12 is a top view of the structure shown in Fig. 11; Figure 6

[0029] Figure 8 Fig. 13 is a front view of the structure shown in Fig. 11; Figure 6 ​​​​​​​

[0030] Figure 9 For Figure 2 The axis measurement view of the clamping device shown in the figure after being installed on the chuck arm (each clamping device is in a closed state and has locked the clamping rod);

[0031] Figure 10 For Figure 9 The top view of the structure shown in the figure;

[0032] Figure 11 For Figure 9 The front view of the structure shown in the figure;

[0033] Figure 12 For Figure 9 The axis measurement view of a clamping rod in the structure shown in the figure.

[0034] In the drawings, the components represented by each reference numeral are listed as follows:

[0035] 1, fixed hoop body; 2, movable hoop body; 3, clamping rod; 4, positioning cross bar; 5, positioning hole; 6, pin shaft; 7, insertion hole; 8, chuck; 9, outer flange; 10, toggle type quick clamp. DETAILED DESCRIPTION

[0036] The technical solutions provided by the present application will be described clearly and completely below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, if the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "top", "bottom", "inner", "outer" are used, the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the present application.

[0038] As Figures 1 to 12As shown, the present application provides a clamp fixing device capable of quickly taking out and replacing wax mold group, which comprises a clamping assembly, a positioning assembly and a locking assembly, the clamping assembly comprises a fixed clamp body 1 and a movable clamp body 2 which can swing relative to each other, the fixed clamp body 1 is connected with a hanging base in the investment casting production line, the movable clamp body 2 is hinged with one end of the fixed clamp body 1 to form a hinged end, and the other end is a free opening end, the locking assembly is arranged at the free opening end of the movable clamp body 2 and the fixed clamp body 1, the locking assembly can be operated by one hand to lock and fix or unlock and release the free opening end, when the free opening end is locked and fixed, the movable clamp body 2 and the fixed clamp body 1 form a clamping cavity for clamping a wax mold group hanging rod 3, the positioning assembly comprises a positioning cross rod 4, one end of the positioning cross rod 4 is fixedly connected with the fixed clamp body 1, the hanging rod 3 is provided with a positioning hole 5 through which the positioning cross rod 4 passes, and the positioning hole 5 is preferably a long hole with a long axis in the vertical direction.

[0039] It should be noted that the hanging base can be a chuck 8, a hanging chain or a fixed hanging rack. Figures 6 to 11 As shown in the embodiment, the hanging base is a chuck 8, the fixed clamp body 1 is provided with an outward turning edge 9, the outward turning edge 9 is fixedly connected with the outer end of the outward extending cantilever of the chuck 8 through a plurality of fixing bolts, a plurality of outward extending cantilevers can be evenly and spacedly connected on one chuck 8, and one of the outward extending cantilevers is fixedly connected with one clamp fixing device.

[0040] In one embodiment of the present application, as shown in the figure, Figures 1 to 3 As shown, the fixed clamp body 1 and the movable clamp body 2 are hinged at the hinged end through a matched pin shaft 6 and a pin hole.

[0041] Specifically, the fixed clamp body 1 and the movable clamp body 2 can be provided with a matched hinge lug at the hinged end, the hinge lug is provided with a pin hole, and the pin shaft 6 is inserted into the corresponding pin hole to realize the hinge of the fixed clamp body 1 and the movable clamp body 2.

[0042] In one embodiment of the present application, the fixed clamp body 1 and the movable clamp body 2 are provided with a reset elastic member at the hinged end, when the locking assembly is switched from the locked fixing state to the unlocked releasing state, the reset elastic member automatically makes the free ends of the fixed clamp body 1 and the movable clamp body 2 away from each other to open the clamping cavity.

[0043] It should be noted that the reset elastic member can be a reset torsional spring or a spring sheet, when the free opening ends of the fixed clamp body 1 and the movable clamp body 2 are close to each other, the reset elastic member accumulates elastic potential energy, when the free opening ends lose the locking effect of the locking assembly, the accumulated elastic potential energy is released to make the free opening ends of the fixed clamp body 1 and the movable clamp body 2 open and away from each other, that is, the clamp fixing device is automatically opened.

[0044] On the basis of the above-mentioned embodiments, the reset elastic member is specifically selected as a torsion spring arranged on the pin shaft 6.

[0045] It should be noted that the two ends of the torsion spring abut against the fixed hoop body 1 and the movable hoop body 2 respectively, and the torsion spring is used to provide an elastic driving force. When the lock-release assembly is unlocked, the fixed hoop body 1 and the movable hoop body 2 are automatically opened by the elastic force of the torsion spring.

[0046] In an embodiment of the present application, one end of the positioning cross rod 4 is fixed to the inner side wall of the fixed hoop body 1, and the other end horizontally extends to the movable hoop body 2. The movable hoop body 2 is provided with a insertion hole 7 for inserting the end of the positioning cross rod 4 away from the fixed hoop body 1. The insertion hole 7 is preferably a long hole with a long axis in the horizontal direction.

[0047] In other words, the positioning assembly includes a horizontally arranged positioning cross rod 4, one end of which is fixed to the inner side wall of the fixed hoop body 1, and the other end horizontally extends towards the movable hoop body 2. Correspondingly, the movable hoop body 2 is provided with a matched insertion hole 7 for inserting the free end of the positioning cross rod 4, so as to realize the support limiting of both ends of the positioning cross rod 4 and ensure the stability of the placement of the hanging rod 3. The positioning cross rod 4 is mainly used for horizontally supporting the matching hanging rod 3 of the wax mold group, supporting and positioning the hanging rod 3, and facilitating quick and accurate placement. When the upper end of the hanging rod 3 is provided with other horizontal hanging and bearing structures (cooperating with the upper end faces of the fixed hoop body 1 and the movable hoop body 2), the positioning cross rod 4 can play a role in positioning and rotation stopping, preventing the hanging rod 3 from rotating circumferentially in the clamping cavity.

[0048] In an embodiment of the present application, the inner side walls of the movable hoop body 2 and the fixed hoop body 1 are provided with anti-slip silica gel.

[0049] It should be noted that the anti-slip silica gel can enhance the clamping effect of the movable hoop body 2 and the fixed hoop body 1 on the hanging rod 3, avoid damage and noise caused by the collision between the outer wall of the hanging rod 3 and the inner wall of the movable hoop body 2 and the fixed hoop body 1 when there is a gap, and improve the frictional restraint effect between the inner wall of the clamping cavity and the outer wall of the hanging rod 3.

[0050] In an embodiment of the present application, the positioning cross rod 4 can be provided with a limiting clamping groove. After the positioning cross rod 4 passes through the positioning hole 5, the rod wall of the hanging rod 3 located at the upper edge of the positioning hole 5 is clamped into the limiting clamping groove, so as to limit the hanging rod 3 in the axial direction of the positioning cross rod 4.

[0051] In one embodiment of the present application, the locking and releasing assembly is a toggle clamp 10. The toggle clamp 10 comprises a mounting base and a locking seat, the mounting base is fixedly mounted on the free opening and closing end of the movable hoop body 2, the locking seat is fixedly mounted on the free opening and closing end of the fixed hoop body 1, the mounting base is connected with an operating handle, a toggle linkage group, an adjusting screw and a locking hook, when the operating handle is pressed into position, the locking hook is hooked with the locking seat to be self-locked. The locking seat is integrally formed with the fixed hoop body 1, and the locking seat has a hook head matched with the locking hook.

[0052] It should be noted that the locking and releasing assembly adopts the toggle clamp 10 to realize quick locking and releasing. When it is needed to make the hoop fixing device hold and lock the hanging rod 3, the operating handle can be pressed downward to drive the toggle linkage group to act, so that the locking hook is hooked with the locking seat and crosses the dead point to form mechanical self-locking, thereby realizing reliable closure and locking of the movable hoop body 2 and the fixed hoop body 1; when it is needed to release the hanging rod 3, the operating handle can be pulled upward by one hand, so that the locking hook is unhooked from the locking seat (if the reset elastic member is provided, the free opening and closing end is automatically opened), and then the hanging rod 3 is horizontally pulled outwards, so that the hanging rod 3 can be taken off from the positioning cross bar 4.

[0053] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamp fixing device for quick removal and replacement of wax modules, characterized in that, The system includes a clamping assembly, a positioning assembly, and a locking assembly. The clamping assembly includes a fixed hoop and a movable hoop that can swing open and close relative to each other. The fixed hoop is connected to a suspension base in the investment casting production line. One end of the movable hoop is hinged to one end of the fixed hoop to form a hinged end, and the other end is a freely opening and closing end. The locking assembly is located at the freely opening and closing end of the movable hoop and the fixed hoop. The locking assembly can be operated with one hand to lock or unlock the freely opening and closing end. When the freely opening and closing end is locked, the movable hoop and the fixed hoop form a clamping cavity in the middle for clamping the wax mold hanging rod. The positioning assembly includes a positioning crossbar. One end of the positioning crossbar is fixedly connected to the fixed hoop. The hanging rod has a positioning hole through which the positioning crossbar passes.

2. The clamp fixing device for quick removal and replacement of wax modules according to claim 1, characterized in that, The fixed hoop and the movable hoop are hinged at the hinge end by a matching pin and a pin hole.

3. The clamp fixing device for quick removal and replacement of wax modules according to claim 2, characterized in that, The fixed hoop and the movable hoop are provided with a reset elastic element at the hinge end. When the locking and releasing assembly switches from the locked and fixed state to the unlocked and released state, the reset elastic element automatically moves the free ends of the fixed hoop and the movable hoop away from each other and opens the clamping cavity.

4. The clamp fixing device for quick removal and replacement of wax modules according to claim 3, characterized in that, The reset elastic element is a torsion spring mounted on the pin.

5. The clamp fixing device for quick removal and replacement of wax modules according to claim 1, characterized in that, One end of the positioning crossbar is fixed to the inner wall of the fixed hoop, and the other end extends horizontally toward the movable hoop. The movable hoop has an insertion hole for inserting the end of the positioning crossbar away from the fixed hoop.

6. The clamp fixing device for quick removal and replacement of wax modules according to claim 5, characterized in that, The inner walls of the moving hoop and the fixed hoop are provided with anti-slip silicone.

7. The clamp fixing device for quick removal and replacement of wax modules according to claim 1, characterized in that, The suspension base is a flower plate, a suspension chain, or a fixed bracket.

8. A clamp fixing device for quick removal and replacement of wax modules according to claim 7, characterized in that, The suspension base is a flower plate, and the top of the fixed hoop is provided with an outward flange. The outward flange is fixedly connected to the outward cantilever of the flower plate by multiple fixing bolts.

9. A clamp fixing device for quick removal and replacement of wax modules according to any one of claims 1 to 8, characterized in that, The locking and releasing assembly is a toggle-type quick clamp.

10. A clamp fixing device for quick removal and replacement of wax modules according to claim 9, characterized in that, The toggle-type quick clamp includes a mounting base and a locking seat. The mounting base is fixedly installed on the free opening and closing end of the moving hoop, and the locking seat is fixedly installed on the free opening and closing end of the fixed hoop. The mounting base is connected to an operating handle, a toggle linkage, an adjusting screw, and a locking hook. When the operating handle is pressed into place, the locking hook engages with the locking seat and locks itself.

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