Public cylinder cover lower core tire fixture

Abstract

The utility model relates to a common cylinder cover core setting mould fixture which comprises a core setting fixture and a core setting mould, the core setting fixture comprises a fixture frame, the fixture frame comprises a square panel, a square frame is connected to the periphery of the front face of the panel, and first positioning guide pin bushes are arranged in the middles of the front side and the rear side of the lower end of the square frame. Clamping movable connecting plates in sliding connection are arranged on the left side and the right side of the panel, clamping plate movable blocks are detachably and fixedly installed on the inner sides of the clamping movable connecting plates, limiting movable block assembly connecting plates are installed at the four corners of the front face of the panel, and limiting movable block assemblies are detachably installed on the limiting movable block assembly connecting plates; the core setting mould comprises a mould bottom frame, positioning supporting seats are arranged between the front side and the rear side of the upper end of the mould bottom frame, positioning pins are arranged on the positioning supporting seats, supporting seats are arranged on the front side and the rear side of the upper end of the mould bottom frame, and mould movable block assemblies are detachably fixed to the left side and the right side of the upper end of the mould bottom frame. According to the utility model, the manufacturing cost of the tool is effectively reduced, and the storage pressure of the tool is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tooling fixtures for casting molding lines, and particularly relates to a common cylinder head lower core fixture. Background Art

[0002] The main production process of cylinder head products on the molding line is: molding sand configuration → sand mixing → molding → core setting → box assembly → casting. Among them, core setting is the key process on the casting molding line. Its working process mainly uses the core setting fixture to take the sand core out of the core setting mold, and then clamps the sand core and transfers it into the sand mold. The role of the core setting fixture is to accurately and stably put the sand core into the mold cavity. It is a very critical tooling fixture to ensure the dimensional accuracy of the casting.

[0003] Most of our products are molded with core clamps, and each product has a set of dedicated core clamps. With the continuous development of products, the number of core clamps is also increasing, which requires a lot of storage space and is also costly to produce. Utility Model Content

[0004] The utility model aims to provide a common cylinder head lower core tire clamp to reduce the types of lower core tire clamps, improve storage space and reduce production costs.

[0005] The technical solution adopted by the utility model is a common cylinder head lower core clamp, comprising a lower core clamp and a lower core mold, the lower core clamp comprising a clamp frame, the clamp frame comprising a square panel, a lower core machine connection frame is installed on the back of the panel, a square frame is connected to the front of the panel, a first positioning guide pin sleeve is arranged in the middle of the front and rear sides of the lower end of the square frame, a first positioning guide pin for cooperating with the sand box for positioning is arranged in the middle of the left and right sides of the lower end of the square frame, a slidingly connected clamping movable connecting plate is arranged on the left and right sides of the panel, a clamping plate movable block for clamping the sand core is detachably fixedly installed on the inner side of the clamping movable connecting plate, and the panel A limiting movable block assembly connecting plate is installed at the four corners of the front side, and a limiting movable block assembly for positioning the sand core is detachably installed on the limiting movable block assembly connecting plate; the lower core jig includes a jig bottom frame, a positioning support seat is arranged in the middle of the front and rear sides of the upper end of the jig bottom frame, a positioning pin is arranged on the positioning support seat, and the positioning pin cooperates with the first positioning guide pin sleeve on the lower core clamp for positioning, support seats for supporting the square frame are arranged on the front and rear sides of the upper end of the jig bottom frame, and second positioning guide pin sleeves are arranged on the left and right sides of the upper end of the jig bottom frame for positioning the core lowering machine conveying trolley, and jig movable block assemblies for positioning the sand core are detachably fixed on the left and right sides of the upper end of the jig bottom frame.

[0006] Furthermore, the clamping movable connecting plate extends to the top of the panel through the strip hole opened on the panel, and sleeves are provided at both ends of the upper side of the clamping movable connecting plate. Support frames are provided on both sides of the strip hole on the back side of the panel, and one support frame on each side is provided on the left and right of the sleeve. A sliding rod is fixedly connected between the support frames, and the sleeve is slidably connected to the sliding rod.

[0007] Furthermore, a cylinder is fixed on the back of the panel, and an output shaft of the cylinder is connected to the clamping movable connecting plate to drive the clamping movable connecting plate to slide.

[0008] Furthermore, an adjustable push rod is provided on the support frame, and the stroke of the clamping movable connecting plate is controlled by pressing against the two ends of the sleeve.

[0009] Furthermore, the clamping plate movable block comprises a fixed plate for fixedly connecting and clamping the movable connecting plate, and a wedge-shaped clamping plate is vertically arranged on the fixed plate toward the direction of the sand core.

[0010] Furthermore, the connecting plate of the limiting movable block assembly is a right-angle fixing piece.

[0011] Furthermore, the limiting movable block assembly includes a first mounting plate, which protrudes and extends toward one side of the sand core and is provided with a movable block mounting block, the movable block mounting block is detachably mounted with a first movable block on the upper side away from the sand core, a second movable block is detachably mounted on the side facing the sand core, and a third movable block is detachably mounted on the end side away from the sand core.

[0012] Furthermore, the mold movable block assembly includes a second mounting plate, on which a fourth movable block is detachably mounted on a side away from the sand core, and the second mounting plate is provided with movable block mounting parts protruding at the front and rear of a side close to the sand core, respectively, and the movable block mounting part is detachably mounted with a fifth movable block on a side away from the sand core.

[0013] Furthermore, a positioning pin guide is provided on the panel to connect the positioning pin sleeve provided on the limiting movable block assembly, a positioning pin guide is provided on the clamping movable connecting plate to connect the positioning pin sleeve provided on the clamping plate movable block, and a positioning pin guide is provided on the tire bottom frame to connect the positioning pin sleeve provided on the tire movable block assembly.

[0014] The utility model has the following beneficial effects:

[0015] The utility model of the utility model of the common cylinder head lower core tire clamp only needs to design and manufacture two sets of common cylinder head lower core tire clamp frames, which can be commonly used by multiple cylinder head products, and the core tire clamp movable block can be common or special according to the product structure type. Compared with the prior art, the tooling manufacturing cost is effectively reduced and the tooling storage pressure is relieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the core lowering fixture of the utility model;

[0018] Figure 3 It is an enlarged schematic diagram of the clamping movable block connecting plate of the utility model;

[0019] Figure 4 It is an enlarged schematic diagram of the limit movable block assembly of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the lower core tire mold of the utility model;

[0021] Figure 6 It is a structural schematic diagram of the utility model combined with a sand core.

[0022] In the figure: 1, core setting fixture; 11, fixture frame; 111, panel; 112, frame; 12, core setting machine connection frame; 13, first positioning guide pin sleeve; 14, first positioning guide pin; 15, clamping block connecting plate; 151, sleeve; 152, support frame; 153, slide bar; 154, push rod; 155, cylinder; 16, clamping plate block; 161, fixed plate; 162, clamping plate; 17, limit block assembly connecting plate; 1 8. Limiting movable block assembly; 181. First mounting plate; 182. Loose block mounting block; 183. First movable block; 184. Second movable block; 185. Third movable block; 2. Lower core jig; 21. Jig bottom frame; 22. Positioning support seat; 23. Support seat; 24. Second positioning guide pin sleeve; 25. Jig movable block assembly; 251. Second mounting plate; 252. Fourth movable block; 253. Loose block mounting portion; 254. Fifth movable block; 3. Sand core. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the utility model, a common cylinder head lower core tire clamp of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1 and Figure 6 As shown, a common cylinder head lower core fixture includes a lower core fixture 1 and a lower core mold 2, which need to be used together to complete the shaping core lowering work. The lower core fixture 1 and the lower core mold 2 are mainly divided into two parts: a common frame and a movable block assembly. The common frame part is common to all products, and the movable block assembly part is dedicated to each product and can be quickly switched with the common frame.

[0025] like Figure 2As shown, the core setting fixture 1 includes a fixture frame 11, which is a carrier for assembling all parts, including a square panel 111, a core setting machine connection frame 12 is installed on the back of the panel 111, and the core setting machine connection frame 12 is a positioning connection component between the core setting fixture 1 and the core setting machine, and a square frame 112 is connected to the front of the panel 111. A first positioning guide pin sleeve 13 is provided in the middle of the front and rear sides of the lower end of the square frame 112. The first positioning guide pin sleeve 13 is one in front and one in the rear, which is used for positioning the core setting fixture 1 and the lower core mold 2, so that the positions of the sand core 3 in the core setting fixture 1 and the lower core mold 2 are consistent. The first positioning guide pin 14 for cooperating with the sand box for positioning is provided in the middle of the left and right sides of the lower end of the square frame 112. The positioning guide pin 14 is one on the left and one on the right, which is used for positioning the core setting fixture 1 and the sand box, so as to ensure that the core setting fixture 1 can smoothly and accurately put the sand core 3 into the sand mold. The left and right sides of the panel 111 are provided with slidingly connected clamping movable connecting plates 15, and the inner side of the clamping movable connecting plates 15 is detachably fixed with a clamping plate movable block 16 for clamping the sand core 3. There are two clamping movable block connecting plates 15 for completing the action of grabbing and releasing the sand core 3. The clamping stroke is designed according to the minimum and maximum product sizes. The clamping movable block connecting plates 15 are designed with mounting holes, which can be quickly disassembled and replaced with the clamping plate movable blocks 16 of each product.

[0026] like Figure 3 As shown, the clamping movable connecting plate 15 extends to the top of the panel 111 through the strip hole opened on the panel 111, and sleeves 151 are provided at both ends of the upper side of the clamping movable connecting plate 15. Support frames 152 are provided on both sides of the strip hole on the back of the panel 111, and one support frame on each side is provided on the left and right of the sleeve 151. A sliding rod 153 is fixedly connected between the support frames 152, and the sleeve 151 is slidably connected to the sliding rod 153. A cylinder 155 is fixed on the back of the panel 111, and the output shaft of the cylinder 155 is connected to the clamping movable connecting plate 15 to drive the clamping movable connecting plate 15 to slide. An adjustable push rod 154 is provided on the support frame 152, and the stroke of the clamping movable connecting plate 15 is controlled by abutting against the two ends of the sleeve 151.

[0027] like Figure 4 As shown, the clamping plate movable block 16 includes a fixed plate 161 for fixing and connecting the clamping movable connecting plate 15, and a wedge-shaped clamping plate 162 is vertically arranged on the fixed plate 161 toward the sand core 3. The clamping plate movable block 16 is designed according to the clamping point of the product. The products that can be used in common can use a common clamping plate movable block, and the products that cannot be used in common need to make a special clamping plate movable block. The clamping plate movable block 16 is installed on the clamping movable block connecting plate 15 for use, and the clamping stroke is designed according to the size of the adapted product.

[0028] The four corners of the front of the panel 111 are installed with a limit block assembly connecting plate 17, which is a right-angle fixing member. The limit block assembly connecting plate 17 is detachably mounted with a limit block assembly 18 for positioning the sand core 3. The limit block assembly connecting plate 17 is designed with mounting holes, which can be quickly disassembled and assembled with the limit block assembly 18 of each product.

[0029] The limit movable block assembly 18 is installed on the limit movable block assembly connecting plate 17 for use, and the limit size is designed according to the external size of the adapted product. In this embodiment, the limit movable block assembly 18 includes a first mounting plate 181, and the first mounting plate 181 protrudes and extends toward the side of the sand core 3 and is provided with a movable block mounting block 182. The movable block mounting block 182 is detachably mounted with a first movable block 183 on the upper side away from the sand core 3, a second movable block 184 is detachably mounted on the side facing the sand core 3, and a third movable block 185 is detachably mounted on the end side away from the sand core 3. Each set of limit movable block assemblies 18 can simultaneously limit the position of the sand core 3 in two directions, so as to ensure the position accuracy of the sand core 3 in the lower core fixture 1. Products that can be used in common can use a common limit movable block assembly 18, and products that cannot be used in common need to make a special limit movable block assembly 18.

[0030] like Figure 5 As shown, the lower core jig 2 includes a jig bottom frame 21, which is a carrier of all components. A positioning support seat 22 is provided in the middle of the front and rear sides of the upper end of the jig bottom frame 21. The positioning support seat 22 is used to position the lower core fixture 1 and the lower core jig 2. A positioning pin is provided on the positioning support seat 22 to cooperate with the first positioning guide pin sleeve 13 on the lower core fixture 1. The positioning pin on the positioning support seat 22 is used in conjunction with the positioning guide pin sleeve 13 on the lower core fixture 1 to ensure that the lower core fixture 1 can smoothly grab the sand core 3. Support seats 23 for supporting the square frame are provided on the front and rear sides of the upper end of the jig bottom frame 21. The support seat 23 is used to support the lower core fixture 1 when it falls. Second positioning guide pin sleeves 24 are provided on the left and right sides of the upper end of the jig bottom frame 21, which are used to position the core machine conveying trolley and are used in conjunction with the positioning pins on the equipment.

[0031] The jig movable block assembly 25 for positioning the sand core 3 is detachably fixed on the left and right sides of the upper end of the jig bottom frame 21. The jig movable block assembly 25 is also used to support the sand core 3. The jig movable block assembly 25 includes a second mounting plate 251. The second mounting plate 251 is detachably mounted with a fourth movable block 252 on the side away from the sand core 3. The second mounting plate 251 is respectively protruded with movable block mounting parts 253 at the front and back of the side close to the sand core 3. The movable block mounting part 253 is detachably mounted with a fifth movable block 254 on the side away from the sand core 3. The contact surface between the movable block and the sand core 3 is provided with limit plates in two directions and a positioning block on the top of the sand core, which can ensure the position accuracy of the sand core 3. A positioning pin sleeve adapted to the positioning pin on the jig bottom frame 21 is provided at the bottom of the first mounting plate 251, which ensures the assembly accuracy of the jig movable block assembly 25 and is convenient for quick disassembly and replacement.

[0032] The utility model of the utility model has a common set of lower core tire fixtures for cylinder heads, and the tire fixtures and fixtures of each product are quick-change movable block components, which can be quickly replaced with the common tire fixture frame. At present, it has been applied to 36 cylinder head products produced by the newly built factory. Only two sets of common cylinder head lower core tire fixture frames are designed and manufactured. The 36 cylinder head products can be used universally, and the tire fixture movable blocks of the core have been reduced to 23 types according to the product structure type. Compared with the existing technology, from the past when each product had a dedicated set of lower core tire fixtures, to the present when each product has a common set, the tooling production cost is effectively reduced and the tooling storage pressure is relieved.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A common cylinder head lower core clamp, characterized in that: The core lowering fixture comprises a fixture frame, the fixture frame comprises a square panel, a core lowering machine connection frame is installed on the back of the panel, a square frame is connected to the front of the panel, a first positioning guide pin sleeve is arranged in the middle of the front and rear sides of the lower end of the square frame, a first positioning guide pin for cooperating with the sand box for positioning is arranged in the middle of the left and right sides of the lower end of the square frame, a slidingly connected clamping movable connecting plate is arranged on the left and right sides of the panel, a clamping plate movable block for clamping the sand core is detachably fixedly installed on the inner side of the clamping movable connecting plate, and a limited movable block assembly is installed at the four corners of the front side of the panel Connecting plate, limiting movable block assembly: a limiting movable block assembly for positioning the sand core is detachably mounted on the connecting plate; the lower core jig comprises a jig bottom frame, a positioning support seat is arranged in the middle of the front and rear sides of the upper end of the jig bottom frame, a positioning pin is arranged on the positioning support seat and cooperates with the first positioning guide pin sleeve on the lower core clamp for positioning, support seats for supporting the square frame are arranged on the front and rear sides of the upper end of the jig bottom frame, second positioning guide pin sleeves are arranged on the left and right sides of the upper end of the jig bottom frame, which are used for positioning the core lowering machine conveying trolley, and jig movable block assemblies for positioning the sand core are detachably fixed on the left and right sides of the upper end of the jig bottom frame.

2. The common cylinder head lower core clamp according to claim 1, characterized in that: The clamping movable connecting plate extends to the top of the panel through the strip hole opened on the panel. Sleeves are arranged at both ends of the upper side of the clamping movable connecting plate. Support frames are arranged on both sides of the strip hole on the back of the panel. One support frame on each side is arranged on the left and right of the sleeve. A sliding rod is fixedly connected between the support frames, and the sleeve is slidably connected to the sliding rod.

3. The common cylinder head lower core clamp according to claim 2, characterized in that: A cylinder is fixed on the back of the panel, and an output shaft of the cylinder is connected to the clamping movable connecting plate to drive the clamping movable connecting plate to slide.

4. The common cylinder head lower core clamp according to claim 3, characterized in that: An adjustable push rod is arranged on the support frame, and the stroke of the clamping movable connecting plate is controlled by pressing against the two ends of the sleeve.

5. The common cylinder head lower core clamp according to claim 1, characterized in that: The clamping plate movable block comprises a fixed plate used for fixedly connecting and clamping a movable connecting plate, and a wedge-shaped clamping plate is vertically arranged on the fixed plate toward the direction of the sand core.

6. The common cylinder head lower core clamp according to claim 1, characterized in that: The connecting plate of the limit movable block assembly is a right-angle fixing piece.

7. The common cylinder head lower core clamp according to claim 1, characterized in that: The limiting movable block assembly includes a first mounting plate, which protrudes and extends toward one side of the sand core and is provided with a movable block mounting block. The movable block mounting block is detachably mounted with a first movable block on the upper side away from the sand core, a second movable block is detachably mounted on the side facing the sand core, and a third movable block is detachably mounted on the end side away from the sand core.

8. The common cylinder head lower core clamp according to claim 1, characterized in that: The mold movable block assembly includes a second mounting plate, on which a fourth movable block is detachably mounted on a side away from the sand core, and the second mounting plate is provided with movable block mounting parts protruding at the front and rear of a side close to the sand core, and on which a fifth movable block is detachably mounted on the movable block mounting part on a side away from the sand core.

9. The common cylinder head lower core clamp according to any one of claims 1 to 8, characterized in that: A positioning pin guide is arranged on the panel to connect the positioning pin sleeve arranged on the limiting movable block assembly, a positioning pin guide is arranged on the clamping movable connecting plate to connect the positioning pin sleeve arranged on the clamping plate movable block, and a positioning pin guide is arranged on the tire bottom frame to connect the positioning pin sleeve arranged on the tire movable block assembly.

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