Clamp for producing and machining cast iron fireplace

Abstract

The utility model relates to a clamp for producing and processing a cast iron fireplace, which comprises a base, a vacuum pump and a strut arranged at the top of the base, a hose communicated with an extraction opening of the vacuum pump, a double-rod hydraulic lever arranged at the upper part of the strut, a rectangular limiting frame fixedly connected with two piston rods of the double-rod hydraulic lever, a mounting box fixedly connected with the top end of the strut, and an opening at the top of the mounting box, a hollow ball is arranged above the mounting box, the bottom of the hollow ball is communicated with a vacuum pipe, the bottom end of the vacuum pipe is fixedly connected with a mounting block, the mounting block is inserted into the mounting box, the two limiting frames can be respectively sleeved on the outer sides of the left end and the right end of the mounting box, the side part of the vacuum pipe is communicated with an exhaust pipe and a pressure relief pipe, and the exhaust pipe is communicated with a hose through a quick joint; the front side, the rear side, the left side, the right side and the top of the hollow ball are fixedly communicated with supporting pipes in the radial direction, the tail ends of the supporting pipes are fixedly communicated with suction cups, and the large-diameter ends of the suction cups face the side away from the hollow ball. The inner support negative pressure type clamping and fixing device can realize inner support negative pressure type clamping and fixing of fireplace workpieces, and is more practical.

Description

Technical Field

[0001] This utility model belongs to the field of cast iron fireplace technology, specifically relating to a jig for the production and processing of cast iron fireplaces. Background Technology

[0002] Cast iron fireplaces are fireplaces made of cast iron, possessing excellent thermal conductivity, high-temperature resistance, durability, and corrosion resistance, and are widely used. Currently, the production process of cast iron fireplaces mainly includes raw material preparation, casting, assembly and debugging, surface treatment, quality inspection, and packaging. Among these, common surface treatment processes include painting and enamel coating. However, in practice, the clamping and fixing of fireplace workpieces often uses external clamping fixtures, which can only hold the workpiece from the outside. This can obstruct parts of the workpiece's surface, leading to incomplete painting or enamel coating and requiring secondary treatment later. This is detrimental to subsequent processing and needs improvement. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a fixture for the production and processing of cast iron fireplaces, which can realize the internal support negative pressure clamping and fixing of fireplace workpieces, so as to solve the above problems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a fixture for manufacturing and processing cast iron fireplaces, comprising a base, a vacuum pump and a support column fixedly mounted on the top of the base, a flexible hose fixedly connected to the air intake of the vacuum pump, a double-rod hydraulic rod horizontally fixedly mounted on the upper part of the support column along the left-right direction, both piston rods of the double-rod hydraulic rod being fixedly connected to rectangular limiting frames, a mounting box fixedly connected to the top of the support column, the top of the mounting box being open, a hollow sphere being provided above the mounting box, and the bottom of the hollow sphere... A vacuum tube is fixedly connected to the hollow sphere, and a mounting block is fixedly connected to the bottom end of the vacuum tube. The mounting block is inserted into the mounting box. Two limiting frames can be respectively fitted onto the outer sides of the left and right ends of the mounting box at this time. A suction pipe and a pressure relief pipe are connected to the side of the vacuum tube. The suction pipe is connected to a hose through a quick connector. A control valve is provided on the pressure relief pipe. Support pipes are radially fixedly connected to the front, back, left, right, and top sides of the hollow sphere. A suction cup is fixedly connected to the tail end of each support pipe. The large diameter end of the suction cup faces away from the hollow sphere.

[0005] Preferably, the limiting frame is adapted to the mounting box.

[0006] Preferably, the mounting block is adapted to the mounting box.

[0007] Preferably, a rubber pad is fixed on the end face of the large-diameter end of the suction cup.

[0008] Preferably, casters are installed at the four corners of the base, and the casters abut against a processing table.

[0009] Preferably, support plates are fixedly provided on the upper parts of both the left and right sides of the base, and L-shaped fixing plates are provided below the support plates. Several sets of telescopic mechanisms are fixedly connected between the top of the vertical part of the fixing plate and the bottom of the corresponding support plate. The telescopic mechanisms are evenly distributed in the front-back direction, and each set of telescopic mechanisms consists of a guide telescopic rod and a tension spring fitted on the outside of the guide telescopic rod. The horizontal part of the fixing plate faces away from the base, and when the tension spring is in its natural state, the bottom of the horizontal part of the fixing plate is higher than the top of the processing table. When the tension spring is stretched, the horizontal part of the fixing plate can abut against the processing table. Several threaded through holes are opened in the front-back direction on the horizontal part of the fixing plate, and threaded blind holes are opened on the processing table corresponding to the threaded through holes. The same wing bolt is screwed onto the same set of threaded through holes and threaded blind holes.

[0010] The beneficial effects of this utility model are as follows: When painting or enamel coating fireplace workpieces, the workpiece can first be inverted onto the hollow sphere, so that the suction cups on the four sides of the hollow sphere abut against the inner walls of the workpiece at this time, and the suction cup on the top of the hollow sphere abuts against the inner wall of the top of the workpiece at this time, thus achieving preliminary internal support positioning and clamping of the workpiece. Then, the vacuum pump is run, and the hollow sphere is evacuated through the vacuum tube, so that negative pressure suction is formed at each suction cup, which can firmly hold and fix the workpiece, completing the internal support negative pressure clamping and fixing of the workpiece. Next, the outer surface of the workpiece can be painted or enamel coated with existing painting or enamel coating equipment. Since the outer surface of the workpiece is not obstructed, the painting can be more comprehensive and thorough, eliminating the need for secondary processing and facilitating subsequent processing. After processing, the vacuum pump is turned off and the control valve is opened, so that the vacuum tube is connected to the outside through the unobstructed pressure relief pipe, which can eliminate the negative pressure at the suction cups, release the negative pressure clamping of the workpiece, and then remove the workpiece.

[0011] When the specifications of the workpiece change, causing the length of the support tube to be incompatible with the inner cavity dimensions of the new batch of workpieces, the hollow sphere can be disassembled and replaced as a whole. Specifically: With the machine stopped, first disconnect the hose from the extraction pipe using a quick connector. Then, operate the double-rod hydraulic cylinder to extend its two piston rods, moving the limit frame away from the mounting box. This releases the mounting block's fixation. Then, pull out the mounting block to remove the entire hollow sphere. Next, take a hollow sphere with a support tube of suitable length, align its mounting block with the mounting box, and insert it into place. Then, operate the double-rod hydraulic cylinder to retract its two piston rods, moving the limit frame towards the mounting box until it fits into the appropriate positions on both sides of the mounting box, thus securing the mounting block. This completes the overall installation of the hollow sphere. Afterward, connect the hose to the extraction pipe using a quick connector, and it can be used again. This allows for flexible and convenient disassembly and replacement of the hollow sphere as a whole, enabling the fixture to flexibly adapt to the clamping needs of fireplace workpieces of various sizes and specifications. It has a wide range of applications, is more flexible and convenient to use, and is more practical. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a front view structural diagram of the support column and mounting box of this utility model;

[0014] Figure 3 This is a schematic diagram of the left-side structure of the limiting frame of this utility model;

[0015] Figure 4 This is a schematic diagram of the main structure of the hollow sphere and vacuum tube of this utility model;

[0016] Figure 5 This is a top view of the hollow sphere structure of this utility model;

[0017] Figure 6 This is a front view structural diagram of the connection between the mounting block and the mounting box of this utility model;

[0018] Figure 7 This is a front view structural diagram of the right side of the base of this utility model.

[0019] The following are the labels in the diagram: 1 is the base, 2 is the vacuum pump, 3 is the support column, 4 is the hose, 5 is the double-bar hydraulic lever, 6 is the limit frame, 7 is the mounting box, 8 is the hollow ball, 9 is the vacuum tube, 10 is the mounting block, 11 is the suction pipe, 12 is the pressure relief pipe, 13 is the quick connector, 14 is the control valve, 15 is the support pipe, 16 is the suction cup, 17 is the rubber pad, 18 is the caster, 19 is the processing table, 20 is the support plate, 21 is the fixing plate, 22 is the guide telescopic rod, 23 is the tension spring, 24 is the threaded through hole, 25 is the threaded blind hole, and 26 is the wing bolt. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 7 As shown, a jig for manufacturing and processing cast iron fireplaces includes a base 1. A vacuum pump 2 and a support column 3 are fixedly mounted on the top of the base 1. A hose 4 is fixedly connected to the air extraction port of the vacuum pump 2. A double-rod hydraulic lever 5 is horizontally fixedly mounted through the upper part of the support column 3 in the left-right direction. Both piston rods of the double-rod hydraulic lever 5 are fixedly connected to rectangular limiting frames 6. A mounting box 7 is fixedly connected to the top of the support column 3. The top of the mounting box 7 is open. A hollow ball 8 is provided above the mounting box 7. A vacuum tube 9 is fixedly connected to the bottom of the hollow ball 8. A mounting block 10 is fixedly connected to the bottom end of the vacuum tube 9. The mounting block 10 is inserted into the mounting box 7. The two limiting frames 6 can be respectively fitted onto the outer sides of the left and right ends of the mounting box 7 at this time. An air extraction pipe 11 and a pressure relief pipe 12 are connected to the side of the vacuum tube 9. The air extraction pipe 11 is connected to the hose 4 through a quick connector 13. A control valve 14 is provided on the pressure relief pipe 12. The hollow sphere 8 is radially fixedly connected to the front, back, left, right sides and top, and a suction cup 16 is fixedly connected to the tail end of the support tube 15. The large diameter end of the suction cup 16 faces away from the hollow sphere 8.

[0022] When painting or enamel coating the fireplace workpiece, first, the workpiece can be inverted onto the hollow sphere 8, so that the suction cups 16 on the four sides of the hollow sphere 8 abut against the inner walls of the workpiece at this time, and the suction cup 16 on the top of the hollow sphere 8 abuts against the inner wall of the top of the workpiece at this time. This achieves preliminary internal support positioning and clamping of the workpiece. Then, the vacuum pump 2 is run, and the hollow sphere 8 is evacuated through the vacuum tube 9, so that negative pressure suction is formed at each suction cup 16, which can firmly hold and fix the workpiece, completing the internal support negative pressure clamping and fixing of the workpiece. Next, the outer surface of the workpiece can be painted or enamel coated using existing painting or enamel coating equipment. Since the outer surface of the workpiece is not obstructed, the painting can be more comprehensive and thorough, eliminating the need for secondary processing and facilitating subsequent processing. After processing, turn off vacuum pump 2 and open control valve 14 to connect vacuum tube 9 to the outside through unobstructed pressure relief pipe 12, thereby eliminating the negative pressure at suction cup 16, releasing the negative pressure holding on the workpiece, and then pulling the workpiece off.

[0023] When the specifications of the workpiece change, causing the length of the support tube 15 to be incompatible with the inner cavity dimensions of the new batch of workpieces, the hollow ball 8 can be disassembled and replaced as a whole. Specifically, while the machine is stopped, first disconnect the connection between the hose 4 and the suction pipe 11 via the quick connector 13. Then, operate the double-rod hydraulic cylinder 5 to extend its two piston rods, moving the limit frame 6 away from the mounting box 7, thus releasing the mounting block 10 from its mounting. Then, pull out the mounting block 10 to remove the hollow ball 8 as a whole. Next, take a hollow ball 8 with a support tube 15 of suitable length, align the mounting block 10 on it with the mounting box 7 and insert it into place. Then, operate the double-rod hydraulic cylinder 5 to retract its two piston rods, moving the limit frame 6 towards the mounting box 7 until the limit frame 6 is fitted into the appropriate positions on both sides of the mounting box 7, thus securing the mounting block 10. This completes the overall installation of the hollow ball 8. Afterward, connect the hose 4 and the suction pipe 11 via the quick connector 13, and it can be used again. This allows for flexible and convenient disassembly and replacement of the hollow sphere 8 as a whole, enabling the fixture to flexibly adapt to the clamping needs of fireplace workpieces of various sizes and specifications. It has a wide range of applications, is more flexible and convenient to use, and is more practical.

[0024] In this embodiment, the limiting frame 6 is adapted to the mounting box 7 to ensure that the limiting frame 6 can be smoothly installed.

[0025] In this embodiment, the mounting block 10 is adapted to the mounting box 7 to ensure that the mounting block is successfully inserted into place.

[0026] In this embodiment, a rubber pad 17 is fixed on the end face of the large diameter end of the suction cup 16, which can play a certain buffering role and avoid damage to the inner cavity of the workpiece when inserting or removing the workpiece, making it more practical.

[0027] In this embodiment, casters 18 are installed at the four corners of the base 1. The casters 18 abut against a processing table 19 so that the fixture can move flexibly and easily according to actual needs, and the position of the fixture can be flexibly changed according to the actual work station.

[0028] In this embodiment, support plates 20 are fixedly provided on the upper parts of both the left and right sides of the base 1. An L-shaped fixing plate 21 is provided below the support plate 20. Several sets of telescopic mechanisms are fixedly connected between the top of the vertical part of the fixing plate 21 and the bottom of the corresponding support plate 20. The telescopic mechanisms are evenly distributed in the front-back direction, and each set of telescopic mechanisms consists of a guide telescopic rod 22 and a tension spring 23 fitted on the outside of the guide telescopic rod 22. The horizontal part of the fixing plate 21 faces away from the base 1, and when the tension spring 23 is in its natural state, the bottom of the horizontal part of the fixing plate 21 is higher than the top of the processing table 19. When the tension spring 23 is stretched, the horizontal part of the fixing plate 21 can abut against the processing table 19. The horizontal portion of the fixed plate 21 has several threaded through holes 24 along its front-to-back direction. The machining table 19 corresponding to the threaded through holes 24 has threaded blind holes 25. The same set of threaded through holes 24 and threaded blind holes 25 are screwed onto the same wing bolt 26. This allows the horizontal portion of the fixed plate 21 to be pressed against the machining table 19 by the extension of the tension spring 23 when using the fixture. The wing bolt 26 then secures the horizontal portion of the fixed plate 21 to the machining table 19, fixing the entire fixture in place and preventing it from moving freely, thus facilitating subsequent use. When it is necessary to change the position of the fixture or replace the entire fixture, simply unscrew the wing bolt 26 for easy hand-tightening. Under the return force of the tension spring 23, the fixed plate 21 automatically moves upwards and becomes suspended in the air. The casters 18 then allow the fixture to be moved flexibly to adjust its position, making it more convenient and practical.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A jig for manufacturing and processing cast iron fireplaces, comprising a base, characterized in that, A vacuum pump and a support column are fixedly mounted on the top of the base. A flexible hose is fixedly connected to the air intake of the vacuum pump. A double-rod hydraulic lever is horizontally fixedly mounted along the left-right direction on the upper part of the support column. Both piston rods of the double-rod hydraulic lever are fixedly connected to rectangular limiting frames. A mounting box is fixedly connected to the top of the support column. The top of the mounting box is open. A hollow sphere is located above the mounting box. A vacuum tube is fixedly connected to the bottom of the hollow sphere. A mounting block is fixedly connected to the bottom end of the vacuum tube. The mounting block is inserted into the mounting box. The two limiting frames can be respectively fitted onto the outer sides of the left and right ends of the mounting box at this time. An air extraction pipe and a pressure relief pipe are connected to the side of the vacuum tube. The air extraction pipe is connected to the flexible hose through a quick connector. A control valve is provided on the pressure relief pipe. Support pipes are radially fixedly connected to the front, back, left, right, and top sides of the hollow sphere. A suction cup is fixedly connected to the tail end of each support pipe. The large diameter end of the suction cup faces away from the hollow sphere.

2. The jig for manufacturing and processing cast iron fireplaces according to claim 1, characterized in that, The limiting frame is compatible with the mounting box.

3. The jig for manufacturing and processing cast iron fireplaces according to claim 1, characterized in that, The mounting block is compatible with the mounting box.

4. The jig for manufacturing and processing cast iron fireplaces according to claim 1, characterized in that, A rubber pad is fixed to the end face of the large-diameter end of the suction cup.

5. The jig for manufacturing and processing cast iron fireplaces according to claim 1, characterized in that, Casters are installed at the four corners of the base, and the casters abut against a processing table.

6. The jig for manufacturing and processing cast iron fireplaces according to claim 5, characterized in that, Support plates are fixedly installed on the upper parts of both sides of the base. An L-shaped fixing plate is installed below the support plate. Several sets of telescopic mechanisms are fixedly connected between the top of the vertical part of the fixing plate and the bottom of the corresponding support plate. The telescopic mechanisms are evenly distributed in the front-back direction, and each set of telescopic mechanisms consists of a guide telescopic rod and a tension spring fitted on the outside of the guide telescopic rod. The horizontal part of the fixing plate faces away from the base. When the tension spring is in its natural state, the bottom of the horizontal part of the fixing plate is higher than the top of the processing table. When the tension spring is stretched, the horizontal part of the fixing plate can abut against the processing table. Several threaded through holes are opened in the front-back direction on the horizontal part of the fixing plate. Threaded blind holes are opened on the processing table corresponding to the threaded through holes. The same wing bolt is screwed into the same set of threaded through holes and threaded blind holes.

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