Tooth rolling front jacking device capable of meeting various adjustable bell housings

Abstract

The invention relates to a gear rolling front jacking device capable of meeting various adjustable bell housings. The technical problem that adjustment cannot be carried out according to bell housings of different sizes and shapes in the prior art is solved. Comprising a front ejector pin seat, one end of the front ejector pin seat is provided with a tip assembly, and the side, away from the front ejector pin seat, of the tip assembly is movably provided with a size-adjustable adjustable bracket structure used for containing a bell housing. And a bracket axial driving mechanism capable of enabling the adjustable bracket structure to be close to or far away from the centre assembly is arranged between the other end of the front centre seat and the adjustable bracket structure. The device has the advantages that installation of various bell housings can be met through the adjustable bracket structure, the size of the V-shaped groove is adjusted through mutual matching of the supporting bracket and the workpiece inclined supporting block, applicability is improved, meanwhile, time wasted by tool replacement during production replacement is saved, and production replacement efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bell-shaped housing front push equipment, and in particular relates to a bell-shaped housing gear rolling front push device that can be adjusted to meet multiple requirements. Background Art

[0002] In the prior art, since one end of the bell shell is a bell-shaped structure and the umbrella-shaped ejector pin has a deep feeding depth, a special structure is required to withdraw the umbrella-shaped ejector pin before the bell shell can be removed. However, the traditional front ejector device often lacks an efficient and convenient ejection structure, resulting in a cumbersome ejection process. At the same time, the traditional front ejector device has a relatively simple structure and a relatively single function. Each bell shell workpiece must be equipped with a set of tooling, which makes production changes very cumbersome and cannot be adjusted according to bell shells of different sizes and shapes, resulting in poor applicability.

[0003] In order to solve the deficiencies of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a bell-shaped shell gear rolling front ejector device [201710857384.2], including a top seat, the top seat is provided with a first cylindrical cavity on the upper part and a second cylindrical cavity on the lower part; an umbrella-shaped movable ejector is sleeved in the top cylinder; the top seat is provided with a rear cover plate, the rear cover plate is vertically fixedly connected to one end of the support rod, and the middle part of the support rod is provided with a first block, a spring, a baffle and a second block in sequence away from the rear cover plate; a slide cylinder is provided inside the second cylindrical cavity, and the slide cylinder is sleeved on the slide rod through the first linear bearing and the second linear bearing, and the support seat is fixed at one end of the slide rod, and the support seat is provided with a front support frame and a rear support frame for supporting the bell-shaped shell; the other end of the slide rod is fixedly connected to the baffle, and a bump block is provided adjacent to the baffle, and the bump block is fixed to the long hole of the fixed frame through a nut; the bottom surface of the top seat is connected to the dovetail slide seat.

[0004] The above solution solves to a certain extent the problem that the existing traditional front ejection device lacks an efficient and convenient ejection structure, resulting in a cumbersome ejection process. However, the solution still has many shortcomings, such as the inability to adjust according to bell shells of different sizes and shapes. Summary of the invention

[0005] The object of the present invention is to provide a bell-shaped housing gear rolling front top device that can be adjusted to meet the above problems.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a device for front jacking of a bell-shaped shell gear rolling that can meet the requirements of multiple adjustable types, including a front jack seat, one end of the front jack seat has a top assembly, and the top assembly is movably provided with an adjustable bracket structure for placing the bell-shaped shell and having an adjustable size on the side away from the front jack seat, and a bracket axial driving mechanism that can make the adjustable bracket structure approach or move away from the top assembly is provided between the other end of the front jack seat and the adjustable bracket structure. The adjustable bracket structure can adapt to the processing requirements of various different specifications of bell-shaped shells through flexible adjustment functions, and there is no need to design and manufacture a dedicated adjustable bracket structure for each specification of bell-shaped shell, thereby reducing production costs. At the same time, the bracket axial driving mechanism can quickly move the top assembly, and can complete the tightening and withdrawal actions in a short time, thereby reducing the adjustment time of the equipment and improving production efficiency.

[0007] In the above-mentioned adjustable bell-shaped housing gear rolling front ejector device that meets multiple requirements, the bracket axial drive mechanism includes optical axes respectively arranged on both sides of the front ejector seat through axially movable mounting components, the two optical axes are arranged in parallel and correspondingly, and the adjustable bracket structure is arranged between the corresponding ends of the two optical axes, and an optical axis fixing plate is arranged between the corresponding other ends of the two optical axes through the mounting and fixing component, and the optical axis fixing plate is connected to the bracket axial drive component. Under the control of the bracket axial drive component, the front ejector seat moves axially along the optical axis, and the optical axis plays a guiding role. At the same time, the optical axis has low cost, good use effect, and better rigidity.

[0008] In the above-mentioned adjustable bell-shaped housing gear rolling front ejector device that meets multiple requirements, the axially movable mounting assembly includes a plurality of bearing mounting seats sequentially arranged on the side of the front ejector seat, the bearing mounting seats are respectively provided with linear bearings and the linear bearings located on one side of the front ejector seat are coaxially arranged, and the optical axis is axially movable through each linear bearing. The front ejector seat is adjacent to the optical axis through the linear bearing, and the linear bearing can make the front ejector seat move more smoothly.

[0009] In the above-mentioned adjustable bell-shaped housing gear rolling front ejector device that meets multiple requirements, the mounting and fixing assembly includes optical axis mounting holes respectively arranged at both ends of the optical axis fixing plate, the optical axis passes through the optical axis mounting holes, and open-type fixing rings that can be fixedly sleeved on the circumferential outer side of the optical axis are respectively arranged on both sides of the optical axis mounting holes. The optical axis fixing plate is fixed to the optical axis through the open-type fixing ring, which can ensure that the bracket axial drive assembly stably controls the movement of the front ejector seat.

[0010] In the above-mentioned adjustable bell-shaped housing gear rolling front ejector device that meets multiple requirements, the bracket axial drive assembly includes an ultra-thin cylinder arranged at one end of the front ejector seat, the cylinder rod of the ultra-thin cylinder is connected with a screw rod, the screw rod is inserted into the screw rod mounting hole located in the middle of the optical axis fixing plate, and radial locking nuts sleeved on the screw rod and connected to the screw rod thread are respectively provided on both sides of the screw rod mounting hole. The screw rod is fixed to the optical axis fixing plate through the radial locking nut, and the cylinder rod of the ultra-thin cylinder is connected to the screw rod, so that the ultra-thin cylinder moves along the length direction of the screw rod during operation, which can save the moving time of the front ejector seat and can also stop the front ejector seat at any position.

[0011] In the above-mentioned adjustable bell-shaped shell gear rolling front top device that meets multiple requirements, the adjustable bracket structure includes two support brackets that are sequentially arranged between one end of the two optical axes, the support bracket close to the top assembly side of the two support brackets is an integrated structure and has a downwardly extending U-shaped frame in the middle of the support bracket, and the other support bracket of the two support brackets is a split structure, and the support bracket is connected to the optical axis through a front and rear adjustable bracket mounting assembly that can adjust the spacing between the two support brackets, and a V-shaped support frame with a V-shaped groove for placing the bell-shaped shell and adjustable width is provided in the middle of the support bracket.

[0012] In the above-mentioned adjustable bell-shaped shell gear rolling front top device that meets multiple requirements, the front and rear adjustable bracket mounting assembly includes bracket opening fixing rings respectively arranged at both ends of the supporting bracket and sleeved on the optical axis, and the supporting bracket is locked and fixed on the optical axis through the bracket opening fixing rings.

[0013] In the above-mentioned device for front top of adjustable bell-shaped shell gear rolling, the V-shaped support frame includes two workpiece diagonal support blocks symmetrically arranged in the middle of the support bracket, the workpiece diagonal support block is V-shaped, and the corresponding sides of the two workpiece diagonal support blocks have inclined portions, and the V-shaped groove is formed between the inclined portions of the two workpiece diagonal support blocks, and the end of the workpiece diagonal support block away from the inclined portion has a horizontally arranged strip hole, and the support bracket is horizontally provided with a plurality of positioning holes corresponding to the strip holes, and the strip holes are connected to at least one positioning hole through mounting bolts. The two support brackets can adjust the distance between the two support brackets through the bracket opening fixing ring, and at the same time, the workpiece diagonal support block and the support bracket adjust the distance between the two workpiece diagonal support blocks through the strip holes and the positioning holes, thereby adjusting the size of the V-shaped groove, and the front and rear adjustment of the two support brackets can meet the needs of a variety of bell-shaped shells of different lengths, and the left and right adjustment of the two workpiece diagonal support blocks can meet the needs of a variety of bell-shaped shells of different diameters, thereby improving practicality.

[0014] In the above-mentioned bell-shaped housing gear rolling front ejector device that meets multiple requirements, the top assembly includes a top rod connected to one end of the front ejector seat through a top mounting structure, and the top rod is detachably provided with an umbrella-shaped top head that can match the bell-shaped housing. The umbrella-shaped top head is replaceable and can be quickly replaced when damaged, thereby saving time.

[0015] In the above-mentioned adjustable bell-shaped housing gear rolling front top device that meets multiple requirements, the top point mounting structure includes a top point sleeve arranged on the inner side of the front top needle seat, the top point sleeve extends to the outer side of the front top needle seat at one end close to the top point rod, a rotating shaft is arranged in the top point sleeve, the top point rod is axially arranged on the inner side of the rotating shaft at one end away from the umbrella-shaped top point, and an inner spacer ring is arranged between the rotating shaft and the top point sleeve.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The device uses an adjustable bracket structure to meet the installation of various bell-shaped shells. The size of the V-shaped groove can be adjusted through the cooperation between the support bracket and the workpiece diagonal support block, which improves the applicability and saves the time wasted on changing tooling during production change, thereby improving the production change efficiency.

[0018] 2. The device adopts cylinder withdrawal type, which can be applied to various bell-shaped shell gear rolling. It is more durable and safer than the traditional spring withdrawal structure, and also reduces the scrap caused by spring fatigue wear, while saving the time of spring withdrawal.

[0019] 3. The device adopts a replaceable umbrella-shaped top head, which is easy to install and low in cost. When the umbrella-shaped top head is damaged after long-term use, it can be quickly replaced, which improves production efficiency and ensures the processing quality of the bell shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural cross-sectional view of the present invention.

[0022] Figure 3 It is a structural schematic diagram of the adjustable bracket structure in the present invention.

[0023] Figure 4 It is a structural schematic diagram of the optical axis fixing plate in the present invention.

[0024] In the figure: front ejector seat 1, bell-shaped shell 11, top assembly 2, top mounting structure 21, top rod 22, umbrella-shaped top head 23, top sleeve 24, rotating shaft 25, inner spacer 26, adjustable bracket structure 3, supporting bracket 31, U-shaped frame 32, V-shaped groove 33, V-shaped support frame 34, workpiece diagonal support block 35, inclined portion 36, strip hole 37, positioning hole 38, bracket axial drive mechanism 4, optical axis 41, optical axis fixing plate 42, axial movable mounting assembly 5, bearing mounting seat 51, linear bearing 52, mounting and fixing assembly 6, optical axis mounting hole 61, open type fixing ring 62, bracket axial drive assembly 7, ultra-thin cylinder 71, cylinder rod 72, screw 73, screw mounting hole 74, radial locking nut 75, bracket front and rear adjustable mounting assembly 8, bracket open fixing ring 81. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-4 As shown, a front ejector device for adjusting a bell-shaped housing gear rolling that meets various requirements includes a front ejector seat 1, one end of the front ejector seat 1 has a top assembly 2, and the top assembly 2 is movably provided with an adjustable bracket structure 3 for placing a bell-shaped housing 11 and having an adjustable size on the side away from the front ejector seat 1, and a bracket axial driving mechanism 4 is provided between the other end of the front ejector seat 1 and the adjustable bracket structure 3, which can make the adjustable bracket structure 3 approach or move away from the top assembly 2. The adjustable bracket structure 3 can adapt to the processing requirements of a variety of different specifications of bell-shaped housings 11 through a flexible adjustment function, and there is no need to design and manufacture a dedicated adjustable bracket structure 3 for each specification of the bell-shaped housing 11, thereby reducing the production cost. At the same time, the bracket axial driving mechanism 4 can quickly move the top assembly 2, and can complete the tightening and withdrawal actions in a short time, thereby reducing the adjustment time of the equipment and improving the production efficiency.

[0027] Combination Figure 1 and Figure 2 As shown, the bracket axial drive mechanism 4 includes optical axes 41 respectively arranged on both sides of the front ejector seat 1 through axial movable mounting components 5, the two optical axes 41 are arranged in parallel and correspondingly, and the adjustable bracket structure 3 is arranged between the corresponding ends of the two optical axes 41, and an optical axis fixing plate 42 is arranged between the corresponding other ends of the two optical axes 41 through the mounting and fixing component 6, and the optical axis fixing plate 42 is connected to the bracket axial drive component 7. Under the control of the bracket axial drive component 7, the front ejector seat 1 moves axially along the optical axis 41, and the optical axis 41 plays a guiding role. At the same time, the optical axis 41 has low cost, good use effect, and better rigidity.

[0028] The axially movable mounting assembly 5 includes a plurality of bearing mounting seats 51 sequentially arranged on the side of the front ejector seat 1, and linear bearings 52 are respectively arranged on the bearing mounting seats 51, and each linear bearing 52 located on one side of the front ejector seat 1 is coaxially arranged, and the optical axis 41 is axially movable through each linear bearing 52. The front ejector seat 1 is adjacent to the optical axis 41 through the linear bearing 52, and the linear bearing 52 can make the front ejector seat 1 move more smoothly.

[0029] Combination Figure 1 and Figure 4 As shown, the mounting and fixing assembly 6 includes optical axis mounting holes 61 respectively arranged at both ends of the optical axis fixing plate 42, the optical axis 41 passes through the optical axis mounting holes 61, and open type fixing rings 62 are respectively arranged on both sides of the optical axis mounting holes 61 and can be fixedly sleeved on the circumferential outer side of the optical axis 41. The optical axis fixing plate 42 is fixed to the optical axis 41 through the open type fixing ring 62, so that the bracket axial drive assembly 7 can stably control the movement of the front ejector seat 1.

[0030] The bracket axial drive assembly 7 includes an ultra-thin cylinder 71 disposed at one end of the front ejector seat 1, and a cylinder rod 72 of the ultra-thin cylinder 71 is connected to a screw 73, which is inserted into a screw mounting hole 74 located in the middle of the optical axis fixing plate 42, and radial locking nuts 75 are respectively provided on both sides of the screw mounting hole 74, which are sleeved on the screw 73 and threadedly connected to the screw 73. The screw 73 is fixed to the optical axis fixing plate 42 through the radial locking nut 75, and the cylinder rod 72 of the ultra-thin cylinder 71 is connected to the screw 73, so that the ultra-thin cylinder 71 moves along the length direction of the screw 73 during operation, which can save the moving time of the front ejector seat 1 and also allow the front ejector seat 1 to stop at any position.

[0031] Combination Figure 1 and Figure 3 As shown, the adjustable bracket structure 3 includes two support brackets 31 which are sequentially arranged between one end of two optical axes 41. The support bracket 31 close to the top assembly 2 of the two support brackets 31 is an integrated structure and has a U-shaped frame 32 extending downward in the middle of the support bracket 31. The other support bracket 31 of the two support brackets 31 is a split structure. The support bracket 31 is connected to the optical axis 41 through a front and rear adjustable bracket mounting assembly 8 which can adjust the spacing between the two support brackets 31. A V-shaped support frame 34 with a V-shaped groove 33 for placing the bell shell 11 and adjustable width is provided in the middle of the support bracket 31.

[0032] The front-rear adjustable bracket mounting assembly 8 includes bracket opening fixing rings 81 which are respectively arranged at both ends of the supporting bracket 31 and sleeved on the optical axis 41 , and the supporting bracket 31 is locked and fixed on the optical axis 41 through the bracket opening fixing rings 81 .

[0033] Specifically, the V-shaped support frame 34 includes two workpiece diagonal support blocks 35 symmetrically arranged in the middle of the support bracket 31, the workpiece diagonal support block 35 is V-shaped and the corresponding sides of the two workpiece diagonal support blocks 35 respectively have an inclined inclined portion 36, and a V-shaped groove 33 is formed between the inclined portions 36 of the two workpiece diagonal support blocks 35, and the end of the workpiece diagonal support block 35 away from the inclined portion 36 has a horizontally arranged strip hole 37, and a plurality of positioning holes 38 corresponding to the strip holes 37 are horizontally arranged on the support bracket 31, and the strip hole 37 is connected to at least one positioning hole 38 by a mounting bolt. The distance between the two support brackets 31 can be adjusted through the bracket opening fixing ring 81. At the same time, the workpiece diagonal support block 35 and the support bracket 31 can adjust the distance between the two workpiece diagonal support blocks 35 through the strip hole 37 and the positioning hole 38, thereby adjusting the size of the V-shaped groove 33. The front and rear adjustment of the two support brackets 31 can meet the needs of a variety of bell-shaped shells 11 with different lengths. The left and right adjustment of the two workpiece diagonal support blocks 35 can meet the needs of a variety of bell-shaped shells 11 with different diameters, thereby improving practicality.

[0034] Combination Figure 1 and Figure 2 As shown, the top assembly 2 includes a top rod 22 connected to one end of the front ejector seat 1 through a top mounting structure 21, and an umbrella-shaped top head 23 that can match the bell housing 11 can be detachably provided on the top rod 22. The umbrella-shaped top head 23 is replaceable and can be quickly replaced when damaged, thereby saving time.

[0035] Among them, the top mounting structure 21 includes a top sleeve 24 arranged on the inner side of the front ejector seat 1, and the top sleeve 24 extends to the outer side of the front ejector seat 1 at one end close to the top rod 22. A rotating shaft 25 is arranged in the top sleeve 24, and the end of the top rod 22 away from the umbrella-shaped top head 23 is axially arranged on the inner side of the rotating shaft 25, and an inner spacer ring 26 is arranged between the rotating shaft 25 and the top sleeve 24.

[0036] The principle of this embodiment is:

[0037] According to the specifications of the bell-shaped housing 11, the distance between the two support brackets 31 is adjusted, and the distance between the two workpiece diagonal support blocks 35 on the support bracket 31 is adjusted. The optical axis fixing plate 42 is fixed to the two optical axes 41 through an open fixing ring 62, and the screw 73 is fixed to the optical axis fixing plate 42 through a radial locking nut 75. The front ejector seat 1 is movably connected to the optical axis 41 through an axially movable mounting assembly 5. A top assembly 2 is installed at one end of the front ejector seat 1, and an ultra-thin cylinder 71 is installed at the other end. The cylinder rod 72 of the ultra-thin cylinder 71 is fixed to the screw 73. When the ultra-thin cylinder 71 is running, the top assembly 2 is driven to move toward or away from the bell-shaped housing 11. The overall structure is simple, operation time is saved, and production efficiency is improved.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although this article uses the terms such as front ejector seat 1, bell housing 11, ejector assembly 2, ejector mounting structure 21, ejector rod 22, umbrella-shaped ejector head 23, ejector sleeve 24, rotating shaft 25, inner spacer 26, adjustable bracket structure 3, supporting bracket 31, U-shaped frame 32, V-shaped groove 33, V-shaped supporting frame 34, workpiece diagonal support block 35, inclined portion 36, strip hole 37, positioning hole 38, bracket axial drive mechanism 4, optical axis 41, optical axis fixing plate 42, axially movable mounting assembly 5, bearing mounting seat 51, linear bearing 52, mounting and fixing assembly 6, optical axis mounting hole 61, open fixing ring 62, bracket axial drive assembly 7, ultra-thin cylinder 71, cylinder rod 72, screw 73, screw mounting hole 74, radial locking nut 75, bracket front and rear adjustable mounting assembly 8, and bracket open fixing ring 81 more frequently, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; any additional limitations interpreted as them are contrary to the spirit of the present invention.

Claims

1. A bell-shaped housing gear rolling front ejector device that can be adjusted to meet various requirements, comprising a front ejector pin seat (1), characterized in that: The front ejector seat (1) has a top assembly (2) at one end, and an adjustable bracket structure (3) for placing a bell housing (11) and having an adjustable size is movably provided on the side of the top assembly (2) away from the front ejector seat (1), and a bracket axial drive mechanism (4) is provided between the other end of the front ejector seat (1) and the adjustable bracket structure (3) to enable the adjustable bracket structure (3) to move closer to or away from the top assembly (2).

2. The bell-shaped housing gear rolling front top device according to claim 1, characterized in that: The bracket axial drive mechanism (4) comprises optical axes (41) respectively arranged on both sides of the front ejector seat (1) through axially movable mounting components (5), the two optical axes (41) are arranged in parallel and correspondingly, and the adjustable bracket structure (3) is arranged between the corresponding ends of the two optical axes (41), and an optical axis fixing plate (42) is arranged between the corresponding other ends of the two optical axes (41) through a mounting fixing component (6), and the optical axis fixing plate (42) is connected to the bracket axial drive component (7).

3. The bell-shaped housing gear rolling front top device according to claim 2, characterized in that: The axially movable mounting assembly (5) comprises a plurality of bearing mounting seats (51) arranged in sequence on the side of the front ejector seat (1), and linear bearings (52) are respectively arranged on the bearing mounting seats (51), and the linear bearings (52) located on one side of the front ejector seat (1) are coaxially arranged, and the optical axis (41) is axially movable and passes through each linear bearing (52).

4. The bell-shaped housing gear rolling front top device that can be adjusted in multiple ways according to claim 2 is characterized in that: The mounting and fixing assembly (6) comprises optical axis mounting holes (61) respectively arranged at two ends of the optical axis fixing plate (42); the optical axis (41) passes through the optical axis mounting hole (61); and open-type fixing rings (62) which can be fixedly sleeved on the circumferential outer side of the optical axis (41) are respectively arranged on both sides of the optical axis mounting hole (61).

5. The bell-shaped housing gear rolling front top device that can be adjusted in multiple ways according to claim 2 is characterized in that: The bracket axial drive assembly (7) includes an ultra-thin cylinder (71) arranged at one end of the front ejector seat (1), and the cylinder rod (72) of the ultra-thin cylinder (71) is connected to a screw (73), and the screw (73) is inserted into a screw mounting hole (74) located in the middle of the optical axis fixing plate (42), and radial locking nuts (75) are respectively provided on both sides of the screw mounting hole (74) and are sleeved on the screw (73) and threadedly connected to the screw (73).

6. A bell-shaped housing gear rolling front top device that can be adjusted in multiple ways according to claim 2, 3, 4 or 5, characterized in that: The adjustable bracket structure (3) comprises two support brackets (31) arranged in sequence between one end of two optical axes (41); the support bracket (31) close to the top assembly (2) of the two support brackets (31) is an integrated structure and has a U-shaped frame (32) extending downward in the middle of the support bracket (31); the other support bracket (31) of the two support brackets (31) is a split structure; the support bracket (31) is connected to the optical axis (41) via a front and rear adjustable bracket mounting assembly (8) capable of adjusting the spacing between the two support brackets (31); and the support bracket (31) is respectively provided with a V-shaped groove (33) for placing a bell shell (11) and a V-shaped support frame (34) capable of adjusting the width in the middle.

7. The bell-shaped housing gear rolling front top device according to claim 6, characterized in that: The bracket front-to-back adjustable mounting assembly (8) comprises bracket opening fixing rings (81) respectively arranged at two ends of the supporting bracket (31) and sleeved on the optical axis (41), and the supporting bracket (31) is locked and fixed on the optical axis (41) by the bracket opening fixing rings (81).

8. The bell-shaped housing gear rolling front top device according to claim 6, characterized in that: The V-shaped support frame (34) comprises two workpiece diagonal support blocks (35) symmetrically arranged in the middle of the support bracket (31), the workpiece diagonal support block (35) is V-shaped, and the corresponding sides of the two workpiece diagonal support blocks (35) respectively have inclined inclined portions (36), and the V-shaped groove (33) is formed between the inclined portions (36) of the two workpiece diagonal support blocks (35), and the end of the workpiece diagonal support block (35) away from the inclined portion (36) has a horizontally arranged strip hole (37), and the support bracket (31) is horizontally provided with a plurality of positioning holes (38) corresponding to the strip holes (37), and the strip holes (37) are connected to at least one positioning hole (38) by means of mounting bolts.

9. The bell-shaped housing gear rolling front top device that can be adjusted in multiple ways according to claim 1, characterized in that: The top assembly (2) comprises a top rod (22) connected to one end of the front top needle seat (1) through a top mounting structure (21), and the top rod (22) is detachably provided with an umbrella-shaped top head (23) that can match the bell housing (11).

10. The bell-shaped housing gear rolling front top device that can be adjusted in multiple ways according to claim 9, characterized in that: The top installation structure (21) comprises a top sleeve (24) arranged on the inner side of the front top needle seat (1), the top sleeve (24) extends to the outer side of the front top needle seat (1) at one end close to the top rod (22), a rotating shaft (25) is arranged in the top sleeve (24), the top rod (22) is axially arranged on the inner side of the rotating shaft (25) at one end away from the umbrella-shaped top head (23), and an inner spacer (26) is arranged between the rotating shaft (25) and the top sleeve (24).

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