Production device for fuel heater production
By designing a rotating disk and clamping mechanism, combined with elastic elements and pressure sensors, the problem of controlling the pressing accuracy of fuel heaters was solved, achieving uniform stress on the shell and improving production quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- RENQIU XINMAIZHONG AUTO PARTS CO LTD
- Filing Date
- 2026-03-16
- Publication Date
- 2026-04-21
AI Technical Summary
In the existing fuel heater assembly process, the pressing accuracy is difficult to control, which leads to shell deformation and damage to internal components, affecting assembly accuracy and production quality.
Multiple movable and liftable pressure blocks are used, combined with a rotating disk and clamping mechanism. Elastic elements and pressure sensors ensure the uniformity and stability of pressing. Electric cylinders and gear transmission are used to achieve continuous operation and avoid uneven force on the shell.
It improves the press-fitting quality and production efficiency of fuel heaters, ensures uniform stress on all parts of the shell, reduces deformation and damage, and improves assembly accuracy and production stability.
Smart Images
Figure CN121892997A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of fuel oil heater manufacturing technology, specifically, it relates to a production apparatus for manufacturing fuel oil heaters. Background Technology
[0002] As an important component of the vehicle's auxiliary heating system, the fuel heater's housing is usually formed by press-fitting connecting parts through interference fit. As fuel heaters develop towards higher efficiency and compactness, the structure of their internal components is becoming increasingly complex, and the requirements for assembly precision are also becoming higher.
[0003] Currently, in the traditional assembly process of fuel oil heaters, single-point press-fitting machines or simple manual tooling are commonly used for component press-fitting. For example, existing press-fitting devices mostly use a single telescopic cylinder to drive a single press head for operation. When press-fitting the fuel oil heater housing, the housing to be pressed is usually clamped in the press-fitting position manually, and the telescopic cylinder drives the press head to press and assemble the two parts. It is difficult to ensure the stability of the parts by manual placement, and the downward pressure of the telescopic cylinder is also difficult to control. The large-area downward pressure of a single press head will cause uneven force on various parts of the parts, generating overturning moment. This can easily cause excessive compression on one side of the housing, resulting in deformation or even damage. At the same time, it affects the assembly accuracy of internal parts and reduces the production quality of fuel oil heaters. Summary of the Invention
[0004] The purpose of this invention is to provide a production apparatus for manufacturing fuel oil heaters, which solves the technical problem in related technologies where the pressing accuracy is difficult to control, leading to a reduction in the quality of fuel oil heaters.
[0005] At least one embodiment of the present invention provides a production apparatus for manufacturing fuel oil heaters, comprising a body and further comprising: A rotating disk, which is rotatably mounted on the machine body; A clamping mechanism, comprising multiple clamping mechanisms, is mounted on the rotary disk and is used to fix and position the assembled workpiece. The clamping mechanism includes: A placement platform is fixedly mounted on the rotating disk, and the placement platform is provided with a receiving groove for accommodating the workpiece; The lower clamping block is movably disposed on the placement platform and is used to clamp and limit the workpiece below. An upper clamping roller is movably mounted on the placement platform for clamping and limiting the workpiece above it. Guide pillars are fixedly mounted on the machine body; Sliding frame one and sliding frame two are fixedly connected. Both sliding frame one and sliding frame two can be lifted and lowered on the guide column. Sliding frame two is located below sliding frame one. An adjusting screw is rotatably mounted on the sliding frame. A pressure block is rotatably mounted at the bottom end of the adjusting screw via an elastic element. The bottom of the pressure block is hemispherical. An adjusting nut is movably mounted on the sliding frame two. The adjusting screw and the adjusting nut are threadedly engaged to adjust the height and position of the pressure block. A pressure sensor is disposed between the pressure block and the elastic element to detect the pressing force of the pressure block; The elastic element includes: A fixed base is rotatably connected to the bottom end of the adjusting screw; A sliding rod is provided on the fixed base, and a sliding groove matching the sliding rod is provided between the sliding rod and the inner top wall of the sliding groove. A buffer spring is provided between the sliding rod and the inner top wall of the sliding groove.
[0006] To achieve the rotation of the adjusting screw, a motor is installed on the sliding frame, and the output end of the motor is connected to the adjusting screw via a telescopic universal joint.
[0007] To enable the adjustment nut to move, multiple electric cylinders are installed on the sliding frame 2. An electric cylinder 3 is fixedly installed at the output end of the electric cylinder 2, and the adjustment nut is fixedly installed at the output end of the electric cylinder 3.
[0008] To ensure the stability of the workpiece placement, multiple electric cylinders are installed on the placement platform. A clamping plate is fixedly installed at the output end of each electric cylinder. The lower clamping block is fixedly installed on the clamping plate, and the upper clamping roller is rotatably installed on the clamping plate.
[0009] To achieve the rotation of the rotating disk, the rotating disk is rotatably mounted on the machine body via a rotating shaft. An electric cylinder five is installed on the machine body, and a drive rack is fixedly installed at the output end of the electric cylinder five. A driven gear is fixedly fitted on the outside of the rotating shaft, and the driven gear meshes with the drive rack.
[0010] To improve the stability of the rotary disc during pressing, a limit block is movably provided on the machine body, and a limit seat is fixedly provided on the rotary disc. The limit seat has a limit groove that matches the limit block. When the limit block and the limit groove are in the same position, the clamping mechanism is in the pressing position.
[0011] To prevent damage to the workpiece due to excessive pressure, a buffer pad for supporting the workpiece is fixedly installed inside the receiving groove.
[0012] 1. Compared with the prior art, the production device for producing fuel heaters provided in this embodiment of the invention, by setting multiple movable and liftable pressure blocks, can move the pressure blocks to fit the top surface of different shapes of the shells. The pressure blocks are driven to descend by sliding frame one and sliding frame two, so that the shells are descended stably and accurately for pressing, ensuring the uniformity of pressure on all parts of the shells, thereby ensuring the pressing quality.
[0013] 2. Compared with the prior art, the production device for producing fuel heaters provided in this embodiment of the invention allows the pressure block to have a certain range of motion through the elastic element. After the pressure block and the shell come into contact, the elasticity of the elastic element allows the upper shell and the lower shell to make close contact and be in a flat state, thereby ensuring the stability and uniform force during subsequent pressing.
[0014] 3. Compared with the prior art, the production device for producing fuel heaters provided in this embodiment of the invention uses a clamping plate to drive the lower clamping block and the upper clamping roller to simultaneously adhere to the lower shell and the upper shell, ensuring the stability and precise docking of the shell. When the pressure block presses down on the upper shell, the rotation of the upper clamping roller can adapt to the descent of the upper shell.
[0015] 4. Compared with the prior art, the production device for producing fuel heaters provided in this embodiment of the invention drives multiple clamping mechanisms to rotate through a rotary table. While pressing the fuel heater, another workpiece to be pressed can be installed on another clamping mechanism, thereby improving the pressing efficiency. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a first-view structural schematic diagram of a production apparatus for manufacturing fuel heaters provided in an embodiment of the present invention. Figure 2 This is an embodiment of the present invention. Figure 1 A schematic diagram of the overall structure from a second perspective; Figure 3 This is an embodiment of the present invention. Figure 1 A schematic diagram of the structure of the central rotating disk, rotating shaft, electric cylinder five, and clamping mechanism; Figure 4 This is an embodiment of the present invention. Figure 1 A schematic diagram of the clamping mechanism; Figure 5 This is an embodiment of the present invention. Figure 1 Structural diagram of the central guide column, sliding frame one, sliding frame two, and top plate; Figure 6 This is an embodiment of the present invention. Figure 1 Structural diagram of sliding frame 1, sliding frame 2, motor and telescopic universal joint; Figure 7 This is an embodiment of the present invention. Figure 1 A structural diagram of the central motor, the telescopic universal joint, the pressure block, and the adjusting nut; Figure 8 This is an embodiment of the present invention. Figure 1 A schematic diagram of the structure of the adjusting screw, pressure block, pressure sensor, and elastic element; Figure 9 This is an embodiment of the present invention. Figure 1 A magnified schematic diagram of the partial structure at point A in the middle; Figure 10 This is an embodiment of the present invention. Figure 1 A magnified schematic diagram of the structure at point B in the middle.
[0018] In the picture: 1. Machine body; 2. Rotary disk; 3. Rotating shaft; 4. Electric cylinder five; 5. Drive rack; 6. Driven gear; 7. Limit block; 8. Electric cylinder six; 9. Limit seat; 10. Guide column; 11. Sliding frame one; 12. Sliding frame two; 13. Top plate; 14. Electric cylinder one; 15. Adjusting screw; 16. Motor; 17. Telescopic universal joint; 18. Pressure block; 19. Adjusting nut; 20. Electric cylinder two; 21. Electric cylinder three; 22. Pressure sensor; 101. Placement platform; 102. Lower clamping block; 103. Upper clamping roller; 104. Buffer pad; 105. Electric cylinder four; 106. Clamping plate; 201. Fixed base; 202. Sliding rod; 203. Buffer spring. Detailed Implementation The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. For ease of understanding, the English abbreviations and related technical terms involved in the embodiments of this disclosure will be explained and described below.
[0019] It should be understood that the described embodiments are merely some, not all, of the embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0020] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The singular forms “a,” “the,” and “the” as used in the embodiments of this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0021] It should be understood that the term "and / or" used in this article is merely a way of describing the logical relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0022] Depending on the context, the word "if" as used here can be interpreted as "when" or "when" or "in response to determination" or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination" or "in response to determination" or "when detection (of the stated condition or event)" or "in response to detection (of the stated condition or event)."
[0023] It should be understood that the terms "first," "second," etc., used in this disclosure are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order.
[0024] In the description of this disclosure, the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as a limitation of this disclosure.
[0025] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can be fixed connections, detachable connections, mating connections or integral connections; those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.
[0026] like Figures 1 to 10 As shown, a production apparatus for manufacturing fuel heaters according to an embodiment of the present invention is illustrated, including a body 1, a rotating disk 2, a clamping mechanism, a guide post 10, a sliding frame one 11, a sliding frame two 12, an adjusting screw 15, an adjusting nut 19, and a pressure sensor 22.
[0027] like Figures 1 to 3 As shown, the rotating disk 2 is rotatably mounted on the machine body 1. To achieve the rotation of the rotating disk 2, the rotating disk 2 is rotatably mounted on the machine body 1 via a rotating shaft 3. The rotating disk 2 and the rotating shaft 3 are coaxially and fixedly connected. The rotating shaft 3 is rotatably mounted on the machine body 1. An electric cylinder 4 is installed on the machine body 1. A drive rack 5 is fixedly mounted on the output end of the electric cylinder 4. A driven gear 6 is fixedly mounted on the outside of the rotating shaft 3. The driven gear 6 meshes with the drive rack 5. The electric cylinder 4 can drive the drive rack 5 to move, thereby driving the driven gear 6 and the rotating shaft 3 to rotate, driving the rotating disk 2 and the clamping mechanism above it to rotate, thereby driving the shell workpiece to be pressed to rotate. After the workpiece to be pressed is rotated to the pressing position, another workpiece can be pre-loaded into the idle clamping position to achieve continuous operation and improve efficiency.
[0028] To improve the stability of the rotary disc 2 during pressing, a limit block 7 is movably installed on the machine body 1. An electric cylinder 6 8 is mounted on the machine body 1, and the limit block 7 is fixedly installed at the output end of the electric cylinder 6 8. A limit seat 9 is fixedly installed on the rotary disc 2, and the limit seat 9 has a limit groove that matches the limit block 7. When the limit block 7 and the limit groove are aligned, the clamping mechanism is in the pressing position. Figure 3 Two clamping mechanisms are provided, which are arranged opposite each other on the rotary disk 2. Two limiting grooves are also provided, which are also arranged opposite each other on the rotary disk 2. When one clamping mechanism is in the pressing position, the other clamping mechanism is in the loading and unloading position. At this time, the limiting block 7 and the limiting groove are in the same position. The electric cylinder 8 can drive the limiting block 7 to move into the inside of the limiting groove to position and fix the rotary disk 2, ensuring the stability of the clamping mechanism and the workpiece, thereby ensuring the stable position of the workpiece and accurate docking during pressing.
[0029] like Figures 3 to 4As shown, multiple clamping mechanisms are provided, mounted on the rotary disk 2, for fixing and positioning the assembled workpiece. Each clamping mechanism includes a placement platform 101, a lower clamping block 102, and an upper clamping roller 103. The placement platform 101 is fixedly mounted on the rotary disk 2 and has a receiving groove for accommodating the workpiece. To prevent damage from excessive pressure on the workpiece, a buffer pad 104 is fixedly installed inside the receiving groove to support the workpiece. The lower clamping block 102 is movably mounted on the placement platform 101 for clamping and limiting the workpiece below. The upper clamping roller 103 is movably mounted on the placement platform 101 for clamping and limiting the workpiece above. Multiple electric cylinders 105 are mounted on the placement platform 101. A clamping plate 106 is fixedly mounted on the output end of each electric cylinder 105. The lower clamping block 102 is fixedly mounted on the clamping plate 106, and the upper clamping roller 103... 03 is rotated on the clamping plate 106, and the lower shell workpiece to be pressed is placed inside the receiving groove. The buffer pad 104 reduces the hard collision between the shell and the placement table 101, thereby reducing the damage to the shell during pressing. At the same time, the buffer pad 104 and the shell have a large friction force to ensure the stability of the shell during the pressing process. The lower shell is placed inside the receiving groove, and the upper shell is placed above the lower shell. The electric cylinder 105 pushes the clamping plate 106 to bring the lower clamping block 102 and the upper clamping roller 103 close and clamp the workpiece. The lower clamping block 102 clamps the lower shell workpiece, and the upper clamping roller 103 clamps the upper shell workpiece. The upper clamping roller 103 is set horizontally. When the upper shell is pressed down, the rotation of the upper clamping roller 103 can adapt to the descent of the upper shell, while maintaining a stable clamping force on the upper shell.
[0030] The guide post 10 is fixedly mounted on the machine body 1. The sliding frame 11 and the sliding frame 2 12 are fixedly connected. Both the sliding frame 11 and the sliding frame 2 12 can be raised and lowered on the guide post 10. The sliding frame 2 12 is located below the sliding frame 11. The top plate 13 is fixedly mounted on the top of the guide post 10. The electric cylinder 14 is mounted on the top plate 13. The sliding frame 11 is fixedly mounted on the output end of the electric cylinder 14. The electric cylinder 14 can drive the sliding frame 11 and the sliding frame 2 12 to rise and fall, thereby driving the pressure block 18 to descend and perform a pressing operation on the workpiece.
[0031] An adjusting screw 15 is rotatably mounted on a sliding frame 11. A motor 16 is mounted on the sliding frame 11. The output end of the motor 16 and the adjusting screw 15 are connected via a telescopic universal joint 17. A pressure block 18 is rotatably mounted on the bottom end of the adjusting screw 15 via an elastic element. The bottom of the pressure block 18 is hemispherical. The elastic element includes a fixed base 201 and a sliding rod 202. The fixed base 201 is rotatably connected to the bottom end of the adjusting screw 15. A sliding groove matching the sliding rod 202 is provided on the fixed base 201. A buffer spring 203 is provided between the sliding rod 202 and the inner top wall of the sliding groove. An adjusting nut 19 is movably mounted on a sliding frame 12. On the upper sliding frame 12, multiple electric cylinders 20 are installed. An electric cylinder 3 21 is fixedly installed at the output end of each electric cylinder 20. An adjusting nut 19 is fixedly installed at the output end of the electric cylinder 3 21. An adjusting screw 15 and the adjusting nut 19 are threadedly engaged to adjust the height and position of the pressure block 18. The adjusting screw 15 can be rotated via a motor 16 and a telescopic universal joint 17. The electric cylinders 20 and 3 21 can adjust the position of the adjusting nut 19, thereby adjusting the position of the adjusting screw 15 and the pressure block 18, so that the pressure block 18 corresponds to different positions of the upper housing workpiece. Simultaneously, the rotation of the adjusting screw 15 adjusts the pressure block... The height of the pressure block 18 is adjusted to ensure precise contact between the pressure block 18 and the workpiece pressing surface. The telescopic universal joint 17, through its extension and angular compensation, accommodates the movement of the adjusting nut 19 and the raising and lowering of the adjusting screw 15. When the adjusting screw 15 drives the pressure block 18 to move or rise, the motor 16 can drive the adjusting screw 15 to rotate. A pressure sensor 22 is positioned between the pressure block 18 and the elastic element to detect the pressing force of the pressure block 18. The position and height of multiple pressure blocks 18 are adjusted according to the top shape and size of the upper housing to adapt to the upper housing, accommodating the pressing of different models of fuel heater housings. As the electric cylinder 14 drives the sliding frame 1... The sliding frame 12 descends, which drives the pressure block 18 to descend and apply precise pressing force to the workpiece. The elastic force of the buffer spring 203 allows the pressure block 18 to have a certain range of motion. First, the upper and lower shells contact but do not completely fit together, and then the pressure is gradually applied to the position, thus ensuring uniform force and preventing deviation during the pressing process. The data from the pressure sensor 22 is fed back to the control system to adjust the pressing rhythm. If the pressing force exceeds the limit, the machine will automatically stop to protect against overload and prevent deformation or damage to the parts. If the connection is inaccurate, the pressure will also rise abnormally and trigger the shutdown protection, thus ensuring the precise and stable pressing of the shell and guaranteeing the production quality of the fuel heater.
[0032] The working principle or usage process of the production equipment for manufacturing fuel oil heaters is as follows: The lower housing workpiece to be pressed is placed in the receiving groove of the placement table 101, and the upper housing is placed on top of it. The electric cylinder 105 drives the clamping plate 106 to move, so that the lower clamping block 102 clamps the lower housing and the upper clamping roller 103 clamps the upper housing. Electric cylinder 4 drives the drive rack 5 to rotate the driven gear 6 and the rotating shaft 3 by 180 degrees, so that the rotating disk 2 drives the clamped housing to the pressing position. Electric cylinder 8 drives the limit block 7 to engage the limit groove to position the rotating disk 2. At this time, the housing of another station can be pre-installed. The position of the adjusting nut 19 is adjusted in advance according to the top shape and size of the upper shell. At the same time, the motor 16 drives the adjusting screw 15 to rotate and adjust the height of the pressure block 18 so that the pressure block 18 matches the top shape of the upper shell. Electric cylinder 14 drives sliding frame 11 and sliding frame 2 12 to descend, and pressure block 18 contacts the upper housing. Buffer spring 203 makes pressure block 18 first lightly touch and align before gradually applying pressure to the position. Pressure sensor 22 monitors the change of pressing force in real time. When the housing deviates, the pressure is abnormal, the system immediately stops and alarms. It can be manually inspected and aligned to achieve efficient and safe automated pressing.
[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A production apparatus for manufacturing fuel oil heaters, comprising a body (1), characterized in that, Also includes: Rotary disk (2), which is rotatably mounted on the machine body (1); Clamping mechanism, wherein multiple clamping mechanisms are provided, and the clamping mechanisms are provided on the rotary disk (2) for fixing and positioning the assembled workpiece; Guide post (10), the guide post (10) is fixedly installed on the body (1); Sliding frame one (11) and sliding frame two (12), the sliding frame one (11) and the sliding frame two (12) are fixedly connected, the sliding frame one (11) and the sliding frame two (12) can be lifted and lowered on the guide column (10), and the sliding frame two (12) is located below the sliding frame one (11); Adjusting screw (15), the adjusting screw (15) is rotatably mounted on the sliding frame (11), and the bottom end of the adjusting screw (15) is rotatably mounted with a pressure block (18) through an elastic element. Adjusting nut (19), the adjusting nut (19) is movably mounted on the sliding frame two (12), the adjusting screw (15) and the adjusting nut (19) are threadedly engaged to adjust the height and position of the pressure block (18); A pressure sensor (22) is disposed between the pressure block (18) and the elastic member to detect the pressing force of the pressure block (18).
2. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, The clamping mechanism includes: A placement platform (101) is fixedly mounted on the rotating disk (2), and the placement platform (101) is provided with a receiving groove for accommodating the workpiece; The lower clamping block (102) is movably disposed on the placement platform (101) for clamping and limiting the workpiece below; The upper clamping roller (103) is movably disposed on the placement table (101) for clamping and limiting the workpiece above.
3. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, The elastic element includes: A fixed base (201) is rotatably connected to the bottom end of the adjusting screw (15); A sliding rod (202) is provided on the fixed base (201) with a sliding groove matching the sliding rod (202), and a buffer spring (203) is provided between the sliding rod (202) and the inner top wall of the sliding groove.
4. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, A motor (16) is installed on the sliding frame (11), and the output end of the motor (16) and the adjusting screw (15) are connected by a telescopic universal joint (17).
5. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, Multiple electric cylinders 2 (20) are installed on the sliding frame 2 (12). Electric cylinder 3 (21) is fixedly installed at the output end of electric cylinder 2 (20). Adjusting nut (19) is fixedly installed at the output end of electric cylinder 3 (21).
6. The production apparatus for manufacturing fuel oil heaters according to claim 2, characterized in that, A clamping plate (106) is movably provided on the placement platform (101), the lower clamping block (102) is fixedly provided on the clamping plate (106), and the upper clamping roller (103) is rotatably provided on the clamping plate (106).
7. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, The rotating disk (2) is rotatably mounted on the machine body (1) via the rotating shaft (3). A drive rack (5) is movably mounted on the machine body (1). A driven gear (6) is fixedly mounted on the outside of the rotating shaft (3). The driven gear (6) and the drive rack (5) mesh.
8. The production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, The machine body (1) is movably provided with a limiting block (7), and the rotating disk (2) is fixedly provided with a limiting seat (9). The limiting seat (9) is provided with a limiting groove that matches the limiting block (7). When the limiting block (7) and the limiting groove are in the same position, the clamping mechanism is in the pressing position.
9. A production apparatus for manufacturing fuel oil heaters according to claim 1, characterized in that, The bottom of the pressure block (18) is hemispherical.
10. A production apparatus for manufacturing fuel oil heaters according to claim 2, characterized in that, The receiving groove is fixedly provided with a buffer pad (104) for supporting the workpiece.