Quick clamp for sand core manufacturing

Abstract

The utility model discloses a quick clamp for manufacturing a sand core. The quick clamp comprises a mounting base, the coring fork assembly is arranged on the mounting base and is used for clamping a sand core; the clamping shaft mechanism is arranged on the mounting base and used for clamping an upper die and a sleeve frame of the core box device, pin shafts used for clamping are arranged on the side portions of the upper die and the sleeve frame, and the clamping shaft mechanism comprises at least one pin sleeve and a clamping shaft assembly, the pin shafts extend into the pin sleeves, and the pin shafts are clamped in the corresponding pin sleeves through the clamping shaft assembly. The quick clamp for manufacturing the sand core, provided by the utility model, can improve the core manufacturing efficiency and reduce the labor intensity.

Description

Technical Field

[0001] The utility model belongs to the field of casting technology, and particularly relates to a quick fixture for core making of sand cores. Background Art

[0002] Today, with the increasingly fierce competition in casting products, the development of new casting products can effectively enhance market competitiveness, improve customer satisfaction, reduce costs, improve efficiency, and enhance the innovation ability of enterprises.

[0003] Generally, when developing new products, a variety of sand cores are required, but the batch size is not large. On the premise of ensuring good quality, a short production cycle is required, and costs also need to be considered.

[0004] For the production of such small-batch and multi-variety sand cores, the general method is to use a general core box for core making and manual core taking. The core box device for making sand cores includes a sleeve frame, an upper mold movably arranged on the sleeve frame, a lower mold fixedly arranged in the sleeve frame, and a plurality of side molds movably arranged on the circumference of the lower mold. The sand core is formed in the cavity formed between the upper mold, the plurality of side molds and the lower mold. Manual core taking has a high labor intensity and low work efficiency.

[0005] Chinese Patent CN112606026A discloses a general fixture for a casting pipe sand core robot, which can only be used to clamp sand core products and cannot be used to clamp each component of the core box device. Summary of the Utility Model

[0006] Based on the above problems, the purpose of the utility model is to provide a quick fixture for core making of sand cores, which can be used to clamp the core box device and sand core products during the sand core making process.

[0007] In order to overcome the deficiencies of the prior art, the technical solution provided by the utility model is as follows:

[0008] A quick fixture for core making of sand cores, comprising:

[0009] An installation base;

[0010] A core-taking fork assembly, which is arranged on the installation base and is used to clamp the sand core;

[0011] A card shaft mechanism, which is arranged on the installation base and is used to clamp the upper mold and the sleeve frame of the core box device. The side parts of the upper mold and the sleeve frame are provided with pins for clamping. The card shaft mechanism includes at least one pin sleeve for the pin to extend into and a card shaft assembly for clamping the pin in the corresponding pin sleeve.

[0012] In one embodiment, the card shaft assembly includes two clamping block components symmetrically arranged on both radial sides of the pin sleeve and a driving component for driving the two clamping block components to move towards or away from each other.

[0013] In one embodiment, the clamping block component includes a clamping block and a connecting plate connecting the clamping block and the driving component, and an arc-shaped positioning groove is provided on one side of the clamping block facing the pin shaft.

[0014] In one embodiment, a circumferential limiting groove matching the clamping block is provided on the outer wall of the pin shaft.

[0015] In one embodiment, a sliding groove matching the connecting plate is provided on the mounting base.

[0016] In one embodiment, the driving component is a double-axis cylinder.

[0017] In one embodiment, a guide rod assembly is further provided between the clamping block component and the mounting base.

[0018] In one embodiment, the guide rod assembly includes a guide rod extending along the moving direction of the clamping block component and a linear bearing provided on the mounting base and matching the guide rod.

[0019] In one embodiment, an elastic member is sleeved on the guide rod between the clamping block component and the mounting base.

[0020] In one embodiment, the core-taking fork assembly includes a plurality of core-taking forks arranged at intervals, an installation groove is provided on the mounting base, and the plurality of core-taking forks are detachably arranged in the installation groove; the core-taking fork includes a first fork portion extending in the vertical direction and a second fork portion extending in the horizontal direction from the first fork portion.

[0021] Compared with the prior art, the advantages of the present utility model are as follows:

[0022] 1. The quick clamp can be used to clamp the core box device and the core product used in the process of making the sand core. Compared with manual handling, the labor intensity is reduced and the production efficiency is improved;

[0023] 2. The clamping shaft mechanism can realize the quick clamping of the upper mold and the sleeve frame, and has high stability;

[0024] 3. Setting the guide rod assembly can improve the structural stability of the clamping shaft assembly. Setting an elastic member on the guide rod assembly can further ensure the structural safety. Even if the double-axis cylinder fails to work due to air cut-off, the clamping shaft mechanism still works and the clamped mold will not fall. Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below. The accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0026] Figure 1 One of the structural schematic diagrams of an embodiment of a rapid fixture for core making of a sand core according to the present utility model;

[0027] Figure 2 The second structural schematic diagram of an embodiment of the present utility model;

[0028] Figure 3 The third structural schematic diagram of an embodiment of the present utility model;

[0029] Figure 4 The structural schematic diagram of the cooperation between an embodiment of the present utility model and a pin shaft;

[0030] Figure 5 One of the structural schematic diagrams of an embodiment of the present utility model for clamping a sleeve frame;

[0031] Figure 6 The second structural schematic diagram of an embodiment of the present utility model for clamping a sleeve frame;

[0032] Figure 7 The structural schematic diagram of an embodiment of the present utility model for clamping a sand core;

[0033] Wherein:

[0034] 100. Upper die; 200. Sleeve frame; 300. Pin shaft; 301. Limit groove; 400. Sand core;

[0035] 1. Installation base; 1-1. Slide groove;

[0036] 2. Core extraction fork; 2-1. First fork part; 2-2. Second fork part

[0037] 3. Pin sleeve;

[0038] 4. Driving component;

[0039] 5. Clamping block;

[0040] 6. Connecting plate;

[0041] 7. Guide rod;

[0042] 8. Elastic member;

[0043] 9. Linear bearing. Detailed implementation manners

[0044] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are for illustrating the present invention and not for limiting the scope of the present invention. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.

[0045] Referring to Figures 1 to 3 , which is a schematic structural diagram of an embodiment of the present invention, a rapid fixture for core making of sand cores is provided, including an installation base 1, a core fork assembly and a clamping shaft mechanism arranged on the installation base 1.

[0046] The core fork assembly is used for clamping the sand core 400, and includes a plurality of core forks 2 arranged at intervals. The plurality of core forks 2 are placed below the sand core 400, and the sand core 400 can be clamped by lifting it upward by a robot. An installation groove is provided on the installation base 1, and the plurality of core forks 2 are detachably arranged in the installation groove by bolts. During use, the number and position of the core forks 2 can be set as needed to adapt to the clamping of different sand 400 products.

[0047] Specifically, the core fork 2 includes a first fork portion 2-1 extending in the vertical direction and a second fork portion 2-2 extending in the horizontal direction from the first fork portion 2-1, that is, the second fork portion 2-2 is connected to the first fork portion 2-1 to form an L shape.

[0048] The clamping shaft mechanism is used for clamping the upper mold 100 and the sleeve frame 200 of the core box device. Two pin shafts 300 for clamping are respectively provided on the side parts of the upper mold 100 and the sleeve frame 200. Correspondingly, the clamping shaft mechanism includes two pin sleeves 3 for the two pin shafts 300 to extend into and a clamping shaft component for clamping the pin shafts 300 in the corresponding pin sleeves 3. The clamping shaft component is arranged on one axial side of the pin sleeve 3, and the pin shafts 300 are clamped in the corresponding pin sleeves 3 through the clamping shaft component, so as to realize the clamping of the upper mold 100 or the sleeve frame 200 by the fixture.

[0049] Specifically, the clamping shaft component includes two clamping block components symmetrically arranged on both radial sides of the pin sleeve 3 and a driving component 4 for driving the two clamping block components to move towards or away from each other. Preferably, the driving component 4 includes two double-acting cylinders arranged parallel up and down, which can drive the two clamping block components to move synchronously to realize the clamping or release of the pin shafts 300.

[0050] Among them, the clamping block component includes a clamping block 5 and a connecting plate 6 connecting the clamping block 5 and the driving component 4. An arc-shaped positioning groove is provided on one side of the clamping block 5 facing the pin shaft 300.

[0051] In order to improve the structural stability, as Figure 4 shown, a circle of limiting grooves 301 matching the clamping block 5 is provided on the outer wall of the pin shaft 300, and the two clamping blocks 5 are driven by the driving component 4 to move towards each other and extend into the limiting grooves 301 to realize the clamping of the pin shaft 300.

[0052] To further improve the stability of the structure, a chute 1-1 matching the connecting plate 6 is provided on the mounting base 1.

[0053] To further improve the stability of the clamping structure, at least one guide rod assembly is provided between the clamping block component and the mounting base 1, which can play a guiding role for the clamping block component. Preferably, two guide rod assemblies are arranged vertically on the clamping block component. Specifically, the guide rod assembly includes a guide rod 7 extending along the moving direction of the clamping block component and a linear bearing 9 provided on the mounting base 1 and matching the guide rod 7. When the driving component 4 drives the clamping block component to move, the clamping block component drives the guide rod 7 to slide on the mounting base 1.

[0054] To further improve the stability of the structure and facilitate the clamping of the pin shaft 300 by the clamping block component, an elastic member 8 is provided on the guide rod 7 between the clamping block component and the mounting base 1. The setting of the elastic member 8 can make the clamping block component stably clamp on the pin shaft 300, so that the clamping block component can maintain the clamping state even when the driving component 4 fails due to air cut-off. Preferably, the elastic member 8 is a spring.

[0055] The working principle of the present utility model is as follows:

[0056] After the production of the core 400 is completed, the pin shaft 300 on the side of the sleeve frame 200 is clamped by the clamping shaft mechanism of the fixture device to clamp the sleeve frame 200. After the core box device is transported out of the core making machine as a whole, it is flipped 180 degrees and finally transported to the core taking table. First, the upper die 100 is locked on the core taking table, and then the locking hook between the upper die 100 and the sleeve frame 200 is opened. The ejecting mechanism on the core taking table jacks up the sleeve frame 200. The robot moves the fixture to the position of the sleeve frame 200, and the driving component drives the two clamping block components to move away from each other to facilitate the pin shaft 300 to extend into the pin sleeve 3. Then the driving component 4 drives the two clamping block components to move relatively to clamp the pin shaft 300 in the pin sleeve 3. At the same time, the elastic member 8 makes the clamping block component stably clamp on the pin shaft 300, realizing the clamping of the sleeve frame 200 by the fixture (as shown in Figure 5 and Figure 6 ). Then, multiple side dies are manually removed. The ejecting mechanism of the core taking table ejects the core 400. The robot drives the fixture to the position of the core 400. The core taking fork assembly extends under the core 400, and the fixture is lifted upward to take away the core 400 (as shown in Figure 7 ). The ejecting mechanism resets, the locking member between the core box device and the core taking table is opened, and the pin shaft 300 on the upper die 100 is clamped by the clamping shaft mechanism of the fixture to complete the clamping of the core 400 and the core box device.

[0057] In summary, the quick fixture can realize the clamping of the core and the core box device, has good versatility, reduces labor intensity, and improves core making efficiency.

[0058] The above examples are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it shall not be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the spirit and essence of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. A quick clamp for sand core making, characterized in that: include: Install the base; A coring fork assembly, which is arranged on the mounting base and is used for clamping the sand core; A shaft clamping mechanism is arranged on the mounting base and is used to clamp the upper mold and sleeve frame of the core box device. The sides of the upper mold and sleeve frame are provided with pins for clamping. The shaft clamping mechanism includes at least one pin sleeve for the pin to extend into and a shaft clamping assembly for clamping the pin in the corresponding pin sleeve.

2. The quick clamp for sand core making according to claim 1, characterized in that: The clamping shaft assembly comprises two clamping block components symmetrically arranged on both radial sides of the pin sleeve and a driving component for driving the two clamping block components to move toward or away from each other.

3. The quick clamp for sand core making according to claim 2, characterized in that: The clamping block component comprises a clamping block and a connecting plate connecting the clamping block and the driving component. An arc-shaped positioning groove is provided on a side of the clamping block facing the pin shaft.

4. The quick clamp for sand core making according to claim 3, characterized in that: A circle of limiting grooves matching the clamping block is arranged on the outer wall of the pin shaft.

5. The quick clamp for sand core making according to claim 3, characterized in that: The mounting base is provided with a slide groove matching the connecting plate.

6. The quick clamp for sand core making according to claim 3, characterized in that: The driving component is a double-shaft cylinder.

7. The quick clamp for sand core making according to claim 2, characterized in that: A guide rod assembly is also provided between the clamping block component and the mounting base.

8. The quick clamp for sand core making according to claim 7, characterized in that: The guide rod assembly comprises a guide rod extending along the moving direction of the clamping block component and a linear bearing arranged on the mounting base and matching with the guide rod.

9. The quick clamp for sand core making according to claim 8, characterized in that: An elastic member is sleeved on the guide rod and located between the clamping block component and the mounting base.

10. The quick clamp for sand core making according to claim 1, characterized in that: The coring fork assembly comprises a plurality of coring forks arranged at intervals, the mounting base is provided with a mounting groove, and the plurality of coring forks are detachably arranged in the mounting groove; The coring fork includes a first fork portion extending in a vertical direction and a second fork portion extending from the first fork portion in a horizontal direction.

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