Christmas tree foot stool welding and clamping jig

Abstract

The utility model provides a Christmas tree foot stand welding and clamping jig which comprises a fixing bottom plate, a center fixing base, a positioning assembly, an inner side limiting assembly, a middle limiting assembly and an outer side limiting assembly. The inner side limiting assemblies, the middle limiting assemblies and the outer side limiting assemblies are all fixed to the fixing bottom plate and sequentially arranged on one side of the center fixing base, and the four sets of inner side limiting assemblies, the four sets of middle limiting assemblies and the four sets of outer side limiting assemblies correspond to the front side, the rear side, the left side and the right side of the center fixing base correspondingly. The fixing device has the advantages that all parts of the foot stool can be quickly and accurately fixed for automatic welding, and the welding efficiency and effect are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of welding auxiliary devices, in particular to a welding clamping fixture for a Christmas tree stand. Background Art

[0002] The Christmas tree stand is used to fix the Christmas tree. After being assembled with the Christmas tree, it is used for decoration in various scenes. The middle part of the Christmas tree stand is a central cylinder that is mounted on the bottom of the Christmas tree trunk. Support legs and connecting ribs need to be welded on the outer circumference of the central cylinder. The support legs, connecting ribs and the central cylinder are welded into a stable structure similar to a triangle. When placed on the ground, the support legs play a role in supporting the Christmas tree. Current Christmas tree stands are generally provided with longitudinal support legs and transverse support legs. The longitudinal support legs and transverse support legs can rotate around the central cylinder. The longitudinal support legs and transverse support legs can be folded during storage to save space. When in use, the longitudinal support legs and transverse support legs are in a cross-shaped state. In order to ensure the functionality and strength of the Christmas tree stand, during the welding process, the support legs and connecting ribs need to be accurately aligned with the designated positions on the central cylinder, which brings operational inconvenience and a lot of time consumption to manual welding. Therefore, it is necessary to make a Christmas tree stand welding clamping fixture that can quickly locate the various components of the stand, and then use a welding robot for welding to improve welding efficiency and effect. Utility Model Content

[0003] The utility model aims to provide a Christmas tree stand welding clamping fixture to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A Christmas tree stand welding clamping fixture comprises a fixed base plate, a central fixed seat, a positioning assembly, an inner limit assembly, a middle limit assembly and an outer limit assembly, wherein the central fixed seat is fixed above the middle of the fixed base plate, the inner limit assembly, the middle limit assembly and the outer limit assembly are all fixed on the fixed base plate and arranged in sequence on one side of the central fixed seat, and the inner limit assembly, the middle limit assembly and the outer limit assembly are each provided with four groups and correspond to the front side, the rear side, the left side and the right side of the central fixed seat respectively;

[0006] The center fixing seat includes a center base, a center cylinder, a clamping block, a cross boss, a positioning boss and a hand-held cylinder. The center base is fixed above the middle of the fixed base plate. A positioning through hole is opened on one side of the center base. The center cylinder is fixed above the center base. A cross groove is opened on the upper end of the center cylinder. The cross boss is fixed on the clamping block and its profile matches the cross groove. The cross boss is inserted into the cross groove. The positioning boss is fixed on the upper side of the clamping block and its front and rear ends protrude from the clamping block. The lower end of the hand-held cylinder is fixed to the upper end of the clamping block.

[0007] The positioning assembly includes a first adjustment base, an elastic pin, a first support plate and a first limit plate. The first adjustment base is fixed on the fixed base plate and its position is adjustable. A first limit groove opening upward is provided on the first adjustment base. The elastic pin is fixed on the lower side of the first adjustment base and the elastic telescopic end is inserted into the positioning through hole. The first support plate is fixed in the middle of the first adjustment base. The first limit plate is fixed on the first adjustment base. Two groups of first limit plates are arranged and correspond to the two sides of the first limit groove respectively. The first limit plate corresponds to the top of the first support plate.

[0008] Further description of the utility model: The cross groove includes a transverse groove and a longitudinal groove which penetrate each other, and the width of the transverse groove is not equal to the width of the longitudinal groove.

[0009] Further description of the utility model: the inner limit assembly includes a second adjustment base, a first frame, a second frame, a second support plate, a second limit plate, a first elastic telescopic member and an L-shaped pressure rod. The lower end of the second adjustment base is fixed to the fixed bottom plate and its position is adjustable. The first frame and the second frame are both fixed to the second adjustment base. A second limit groove is formed between the first frame and the second frame. The second support plate is fixed to the upper side of the second frame. A supporting boss is provided on the side of the second support plate facing the second limit groove. The second limit plate is fixed to the first frame and corresponds to the second support plate. The first elastic telescopic member is vertically fixed to the upper end of the first frame. The lower end of the vertical rod of the L-shaped pressure rod is connected to the first elastic telescopic member. The cross bar of the L-shaped pressure rod passes through the first limit groove and is pressed tightly on the second frame.

[0010] Further description of the utility model: the middle limiting assembly includes a third adjusting base, a third supporting plate, a third limiting plate and a fourth limiting plate. The lower end of the third adjusting base is fixed on the fixed bottom plate and its position is adjustable. The third adjusting base is provided with a third limiting groove opening upward. The third supporting plate is fixed to the outer side of the third adjusting base. The third limiting plate is fixed to the inner side of the third adjusting base and corresponds to the third supporting plate. The third limiting plates are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate is fixed on the third adjusting base. The fourth limiting plates are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate corresponds to the top of the third limiting plate.

[0011] Further description of the utility model: the outer limiting assembly includes a fourth adjusting base, a connecting block, an adjusting bracket, a second elastic telescopic member and a top rod. The lower end of the fourth adjusting base is fixed on the fixed bottom plate and the position is adjustable. The connecting block is fixed above the fourth adjusting base. The connecting block is provided with a fourth limiting groove with an opening facing inward. The lower end of the adjusting bracket is fixed to the outer side of the fourth adjusting base. The second elastic telescopic member is fixed to the upper end of the adjusting bracket and the position is adjustable in the vertical direction. The outer end of the top rod is fixed on the second elastic telescopic member, and the top rod corresponds to the top of the fourth limiting groove.

[0012] The beneficial effects of the utility model are as follows: before welding, according to the size of the product to be welded, the positions of the inner limit assembly, the middle limit assembly and the outer limit assembly on the fixed bottom plate are adjusted; then, the first through hole on the center cylinder and the second through hole on the lower sleeve are aligned, and the center cylinder is sleeved on the outer periphery of the center base; the first through hole and the second through hole are aligned with the positioning through hole; the elastic pin passes through the second through hole, the first through hole and the positioning through hole in sequence, so that the lower sleeve and the center cylinder are fixed on the center base; then, the upper sleeve is sleeved on the upper end of the center cylinder; a positioning notch is provided on the upper end of the upper sleeve, and the hand is held tightly. Hold the cylinder and insert the cross boss into the cross groove. At this time, the positioning boss corresponds to the positioning notch of the upper ring, so that the position of the upper ring and the center cylinder is fixed. Then, the four groups of supporting feet and four groups of connecting ribs are fixed to the outer circumference of the center cylinder through the inner limit assembly, the middle limit assembly and the outer limit assembly. The welding robot can be used to automatically weld the welding position. After welding is completed, the entire product is lifted and taken out by holding the cylinder. The advantage of this design is that it can quickly and accurately fix the various components of the tripod for automatic welding, which greatly improves the efficiency and effect of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the product structure diagram of the Christmas tree stand;

[0014] Figure 2 It is the overall structure diagram of the utility model;

[0015] Figure 3 It is a structural diagram of the center fixing seat and the positioning assembly in the utility model;

[0016] Figure 4 It is a structural diagram of the inner side limit assembly in the utility model;

[0017] Figure 5 It is a structural diagram of the middle limit assembly of the utility model;

[0018] Figure 6 It is a structural diagram of the middle and outer side limit components of the utility model;

[0019] Description of reference numerals:

[0020] 001, center cylinder; 002, upper ring; 003, lower ring; 004, support foot; 005, connecting rib;

[0021] 1. Fixed bottom plate; 2. Center fixing seat; 21. Center base; 211. Positioning through hole; 22. Center cylinder; 221. Cross groove; 23. Pressing block; 24. Cross boss; 25. Positioning boss; 26. Hand-held cylinder; 3. Positioning assembly; 31. First adjustment base; 32. Elastic latch; 33. First support plate;

[0022] 34. first limit plate; 4. inner limit assembly; 41. second adjustment base; 42. first stand;

[0023] 43. second stand; 44. second support plate; 45. second limit plate; 46. first elastic telescopic member;

[0024] 47. L-shaped pressure rod; 5. Middle limit assembly; 51. Third adjustment base; 52. Third support plate; 53. Third limit plate; 54. Fourth limit plate; 6. Outer limit assembly; 61. Fourth adjustment base; 62. Connecting block; 63. Adjustment bracket; 64. Second elastic telescopic member; 65. Push rod. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings:

[0026] like Figure 1 As shown in the figure, the finished product of the Christmas tree tripod after welding is completed. During welding, the upper ring 002 and the lower ring 003 need to be respectively sleeved on the upper and lower ends of the center cylinder 001, and the support legs 004 are welded on the front and rear sides of the upper ring 002, and the connecting ribs 005 are welded on the front and rear sides of the lower ring 003. The support legs 004 are welded on the left and right sides of the upper end of the center cylinder 001, and the connecting ribs 005 are welded on the left and right sides of the lower end of the center cylinder 001, and each connecting rib 005 is welded to the corresponding support legs 004. When the tripod is unfolded for use, the longitudinal support legs 004 and the transverse support legs 004 are perpendicular, a first through hole is provided at the lower end of the center cylinder 001, and a second through hole is provided on the lower ring 003 at a position corresponding to the first through hole, and the longitudinal support legs 004 and the transverse support legs 004 are fixed by screwing screws on the first through hole and the second through hole to ensure stability during use.

[0027] like Figures 2 to 6 As shown, a Christmas tree stand welding clamping fixture comprises a fixed base plate 1, a central fixed seat 2, a positioning assembly 3, an inner limit assembly 4, a middle limit assembly 5 and an outer limit assembly 6. The central fixed seat 2 is fixed to the upper middle part of the fixed base plate 1. The inner limit assembly 4, the middle limit assembly 5 and the outer limit assembly 6 are all fixed to the fixed base plate 1 and arranged in sequence on one side of the central fixed seat 2. The inner limit assembly 4, the middle limit assembly 5 and the outer limit assembly 6 are each provided with four groups and correspond to the front side, the rear side, the left side and the right side of the central fixed seat 2 respectively.

[0028] The center fixing seat 2 includes a center base 21, a center cylinder 22, a clamping block 23, a cross boss 24, a positioning boss 25 and a hand-held cylinder 26. The center base 21 is fixed above the middle of the fixed base plate 1. A positioning through hole 211 is provided on one side of the center base 21. The center cylinder 22 is fixed above the center base 21. A cross groove 221 is provided at the upper end of the center cylinder 22. The cross boss 24 is fixed on the clamping block 23 and its profile matches the cross groove 221. The cross boss 24 is inserted into the cross groove 221. The positioning boss 25 is fixed on the upper side of the clamping block 23 and its front and rear ends protrude from the clamping block 23. The lower end of the hand-held cylinder 26 is fixed to the upper end of the clamping block 23.

[0029] The positioning assembly 3 includes a first adjustment base 31, an elastic pin 32, a first support plate 33 and a first limit plate 34. The first adjustment base 31 is fixed on the fixed base plate 1 and its position is adjustable. A first limit groove opening upward is provided on the first adjustment base 31. The elastic pin 32 is fixed on the lower side of the first adjustment base 31 and the elastic telescopic end is inserted into the positioning through hole 211. The first support plate 33 is fixed in the middle of the first adjustment base 31. The first limit plate 34 is fixed on the first adjustment base 31. Two groups of first limit plates 34 are arranged and correspond to the two sides of the first limit groove respectively. The first limit plate 34 corresponds to the top of the first support plate 33.

[0030] Before welding, according to the size of the product to be welded, adjust the positions of the inner limit assembly 4, the middle limit assembly 5 and the outer limit assembly 6 on the fixed base plate 1, then align the first through hole on the center cylinder 001 with the second through hole on the lower ring 003, and sleeve the center cylinder 001 on the outer periphery of the center base 21, align the first through hole and the second through hole with the positioning through hole 211, and the elastic pin 32 passes through the second through hole, the first through hole and the positioning through hole 211 in sequence, so that the lower ring 003 and the center cylinder 001 are fixed on the center base 21, then, sleeve the upper ring 002 on the upper end of the center cylinder 001, and the upper end of the upper ring 002 is provided with a positioning notch, hold the hand-held cylinder 26 tightly and insert the cross boss 24 into the cross groove 221, At this time, the positioning boss 25 corresponds to the positioning notch of the upper ring 002, so that the position of the upper ring 002 and the center cylinder 001 is fixed. Then, the four groups of supporting feet 004 and the four groups of connecting ribs 005 are fixed to the outer periphery of the center cylinder 001 through the inner limit assembly 4, the middle limit assembly 5 and the outer limit assembly 6. The welding position can be automatically welded by a welding robot. The first support plate 33 is used to support the inner side of the connecting rib 005, and the first limit plate 34 is used to limit the position of the inner side of the supporting foot 004. After welding is completed, the entire product is lifted and taken out by holding the cylinder 26. The advantage of this design is that it can quickly and accurately fix the various components of the tripod for use in automated welding, which greatly improves the efficiency and effect of welding.

[0031] The cross groove 221 includes a transverse groove and a longitudinal groove that penetrate each other, and the width of the transverse groove is not equal to the width of the longitudinal groove. The finished tripod is a front-to-back symmetrical structure, and the width of the transverse groove is not equal to the width of the longitudinal groove, which can prevent the upper ring 002 from deflecting 90° and causing the welding position to be wrong, thereby playing a role in preventing errors.

[0032] The inner limiting assembly 4 includes a second adjusting base 41, a first upright frame 42, a second upright frame 43, a second support plate 44, a second limiting plate 45, a first elastic telescopic member 46 and an L-shaped pressure rod 47. The lower end of the second adjusting base 41 is fixed on the fixed bottom plate 1 and its position is adjustable. The first upright frame 42 and the second upright frame 43 are both fixed on the second adjusting base 41. A second limiting groove is formed between the first upright frame 42 and the second upright frame 43. The second support plate 44 is fixed on the upper side of the second upright frame 43. A supporting boss is provided on the side of the second support plate 44 facing the second limiting groove. The second limiting plate 45 is fixed on the first upright frame 42 and corresponds to the second support plate 44. The first elastic telescopic member 46 is vertically fixed on the upper end of the first upright frame 42. The lower end of the vertical rod of the L-shaped pressure rod 47 is connected to the first elastic telescopic member 46. The cross rod of the L-shaped pressure rod 47 passes through the first limiting groove and is pressed tightly on the second upright frame 43.

[0033] The second adjustment base 41 can flexibly adjust the position according to the size of the supporting foot 004 and the connecting rib 005. The supporting boss on the second support plate 44 is used to support the supporting foot 004. The position and angle of the second limiting plate 45 relative to the second limiting groove can be adjusted to limit the position of the supporting foot 004. After the supporting foot 004 is placed, the L-shaped pressure rod 47 is pressed against the supporting foot 004. After welding is completed, when the product needs to be taken out, the L-shaped pressure rod 47 is lifted up and rotated 90° before being released. Under the action of the first elastic telescopic member 46, it is pressed against the first stand 42. When taking it out, the connecting rib 005 can be directly taken out through the gap between the second support plate 44 and the second limiting plate 45.

[0034] The middle limiting assembly 5 includes a third adjusting base 51, a third supporting plate 52, a third limiting plate 53 and a fourth limiting plate 54. The lower end of the third adjusting base 51 is fixed on the fixed base plate 1 and its position is adjustable. The third adjusting base 51 is provided with a third limiting groove opening upward. The third supporting plate 52 is fixed to the outer side of the third adjusting base 51. The third limiting plate 53 is fixed to the inner side of the third adjusting base 51 and corresponds to the third supporting plate 52. The third limiting plates 53 are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate 54 is fixed on the third adjusting base 51. The fourth limiting plates 54 are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate 54 corresponds to the top of the third limiting plate 53.

[0035] The third adjustment base 51 can be flexibly adjusted in position according to the size of the supporting foot 004 and the connecting rib 005 , and the position and angle of the third limiting plate 53 and the fourth limiting plate 54 relative to the third limiting groove can be adjusted to limit the position of the connecting rib 005 and the supporting foot 004 .

[0036] The outer limiting assembly 6 includes a fourth adjusting base 61, a connecting block 62, an adjusting bracket 63, a second elastic telescopic member 64 and a push rod 65. The lower end of the fourth adjusting base 61 is fixed on the fixed base plate 1 and is positionally adjustable. The connecting block 62 is fixed above the fourth adjusting base 61. The connecting block 62 is provided with a fourth limiting groove opening toward the inside. The lower end of the adjusting bracket 63 is fixed to the outer side of the fourth adjusting base 61. The second elastic telescopic member 64 is fixed to the upper end of the adjusting bracket 63 and is positionally adjustable in the vertical direction. The outer end of the push rod 65 is fixed on the second elastic telescopic member 64. The push rod 65 corresponds to the upper side of the fourth limiting groove.

[0037] The fourth adjustment base 61 can flexibly adjust the position according to the size of the supporting foot 004 and the connecting rib 005. The outer end of the supporting foot 004 is placed in the fourth limiting groove of the connecting block 62, and the connecting rib 005 is placed in the fourth limiting groove and the outer end contacts the supporting foot 004. If there is a preset hole position on the supporting foot 004, the outer end of the connecting rib 005 is inserted into the hole, and the top rod 65 presses the supporting foot 004 inward under the action of the second elastic telescopic member 64. The second elastic telescopic member 64 is fixed to the upper end of the adjustment bracket 63 and can be adjusted in the vertical direction. The contact position and strength of the top rod 65 and the supporting foot 004 can be flexibly adjusted.

[0038] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A Christmas tree stand welding fixture, characterized by: It includes a fixed base plate, a central fixed seat, a positioning assembly, an inner limit assembly, a middle limit assembly and an outer limit assembly, wherein the central fixed seat is fixed above the middle of the fixed base plate, the inner limit assembly, the middle limit assembly and the outer limit assembly are all fixed to the fixed base plate and arranged in sequence on one side of the central fixed seat, and the inner limit assembly, the middle limit assembly and the outer limit assembly are each provided with four groups and correspond to the front side, the rear side, the left side and the right side of the central fixed seat respectively; The center fixing seat comprises a center base, a center cylinder, a clamping block, a cross boss, a positioning boss and a hand-held cylinder. The center base is fixed above the middle part of the fixed bottom plate. A positioning through hole is provided on one side of the center base. The center cylinder is fixed above the center base. A cross groove is provided on the upper end of the center cylinder. The cross boss is fixed on the clamping block and its contour matches the cross groove. The cross boss is inserted into the cross groove. The positioning boss is fixed on the upper side of the clamping block and its front and rear ends protrude from the clamping block. The lower end of the hand-held cylinder is fixed to the upper end of the clamping block. The positioning assembly includes a first adjustment base, an elastic pin, a first support plate and a first limit plate. The first adjustment base is fixed to the fixed bottom plate and its position is adjustable. The first adjustment base is provided with a first limit groove opening upward. The elastic pin is fixed to the lower side of the first adjustment base and the elastic telescopic end is inserted into the positioning through hole. The first support plate is fixed to the middle part of the first adjustment base. The first limit plate is fixed to the first adjustment base. Two groups of the first limit plates are arranged and correspond to the two sides of the first limit groove respectively. The first limit plate corresponds to the top of the first support plate.

2. A Christmas tree stand welding fixture according to claim 1, characterized in that: The cross groove includes a transverse groove and a longitudinal groove penetrating each other, and the width of the transverse groove is not equal to the width of the longitudinal groove.

3. The Christmas tree stand welding fixture according to claim 1, characterized in that: The inner limiting assembly includes a second adjusting base, a first frame, a second frame, a second supporting plate, a second limiting plate, a first elastic telescopic member and an L-shaped pressure rod. The lower end of the second adjusting base is fixed to the fixed bottom plate and its position is adjustable. The first frame and the second frame are both fixed to the second adjusting base. A second limiting groove is formed between the first frame and the second frame. The second supporting plate is fixed to the upper side of the second frame. A supporting boss is provided on the side of the second supporting plate facing the second limiting groove. The second limiting plate is fixed to the first frame and corresponds to the second supporting plate. The first elastic telescopic member is vertically fixed to the upper end of the first frame. The lower end of the vertical rod of the L-shaped pressure rod is connected to the first elastic telescopic member. The cross bar of the L-shaped pressure rod passes through the first limiting groove and is pressed tightly on the second frame.

4. A Christmas tree stand welding fixture according to claim 1, characterized in that: The middle limiting assembly includes a third adjusting base, a third supporting plate, a third limiting plate and a fourth limiting plate. The lower end of the third adjusting base is fixed to the fixed bottom plate and its position is adjustable. The third adjusting base is provided with a third limiting groove opening upward. The third supporting plate is fixed to the outer side of the third adjusting base. The third limiting plate is fixed to the inner side of the third adjusting base and corresponds to the third supporting plate. The third limiting plates are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate is fixed to the third adjusting base. The fourth limiting plates are arranged in two groups and correspond to the two sides of the third limiting groove respectively. The fourth limiting plate corresponds to the top of the third limiting plate.

5. The Christmas tree stand welding fixture according to claim 1, characterized in that: The outer limiting assembly includes a fourth adjustment base, a connecting block, an adjustment bracket, a second elastic telescopic member and a push rod. The lower end of the fourth adjustment base is fixed to the fixed bottom plate and is positionally adjustable. The connecting block is fixed above the fourth adjustment base. The connecting block is provided with a fourth limiting groove with an opening facing inward. The lower end of the adjustment bracket is fixed to the outer side of the fourth adjustment base. The second elastic telescopic member is fixed to the upper end of the adjustment bracket and is positionally adjustable in the vertical direction. The outer end of the push rod is fixed to the second elastic telescopic member, and the push rod corresponds to the upper side of the fourth limiting groove.

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